    
   
   
      
     
    
      
      
  
   
       
     
   
        
    
         
        
     
   
         
     
     
    
      
       
     
     
        
     
    
     
    
     
  
     
     
         
        
       
        
   
     
   
    
    
        
   
   
     
      
     
   
         
        
     
        
     
       
       
   
     
    
     
     
     
   
   
   
   
 
 
   
     
     
 
    
      
   
     
      
  
     
   
   
   
    
       
     
       
    
   
      
     
    1990   2   