         
     
     
                
                 
                 
                  
      11           
      38           
                  
      11             
      38          
                  
      51           
      6 1           
                  
      51           
      6 1           
                   
      7 1           
      8 1           
                   
      71            
      81           
                   
      910           
      10 1           
                   
      910           
      101             
                   
                 
                 
                  
     
     


     
     
                       