 
     
 
 
  
      
            
           
  
         
              
     
         
           
        
             
             
        
          
           
         
       ￿￿   
   
     
          
   
        
             
       
           
       
    
          
           
            
        
  
     
     
      
    
     
     
  
           
          
          
          
          
           
             
            
             
       
             
             
         
  
          
           
           
   
          
             
          
           
              
   
            
           
           
             
      
       
       
       
      
            
              
            
            
     
       
       
       
    
     
          
            
        
          
     
   
    
           
             
          
       
       
             
 
       

            
            
          
 
           
            
       

            
        
             
         
          
            
            
         
           
           
          
          
           
          
     
         
        
        
        
               
          
    
         
            

     
   
    
      
           
              
            
          
          
     
   
           

           
            
            
           
        
       
            
           
  
            
          
             
           
       
           
           
           
          
       
        
            
            
             
           
           
          
          
          
 
           
           
         
     
   
    
           
     
     
           
          
             
          
          
          
            
          
       
    
             
            
            

   
             
           
        
            
           
   
            
     
          
          
      
 
          
            
          
           
        
         
           
          
    
           
           
         
     
   
    
           
          
          
        
        
    
           
               
            
           
              
           
           
        


      
          
          
           
          
          
           
     
           
          
        
     
            
     
           
    
      
          

 
               
          
             
    
         
  
 
     
      
    
  
      
     
   
     
      
            
    
     
   
    
   
            
             
    
          
         
         
      
 
   

        
            
        
           
           
         
           
           
           
       
            
           
             
            
            
            
        
             
           
       
          
           
             
        
          
           
          
          
  
             
         
        
           
     
   
    
             

         
    
      
      
     

         
    
      
  
           
          
              
 
      
      
  
          
         
           
           
            
              
       
              
   
          
         
      
        
            
            
       
          
            
            
            
       
            
         
             
               
            
              
  
             
            
          
     
   
    
            
         
   
            
         
           
            
           
           
         
            
          
         
          
         
     
            
             
            
             
           
              
            
           
    
         
          
          
            
       
     
           
             
           
         
            
           
           
   
        
     
      
     
      
   
    
  
       ￿  ￿
            
     
   
    
       
         
   
           
           
           
            
     
            
         
          
         
           
          
          
      
        
         
         
          
           
        
         
      
          
 
   
    
   
        
  
           
          
            
           
  
     
          
   
          
          
     
   
    
            
      
           

          
        
  
            
               
          
            
          
            
  
              
       
           
  
           
      
          
          
              
           
          
            
          

         
            
         
         
         
             
           
          
       
         
           
         
         
         
     
   
    
          
          
          
      
     
   