                  9   17 18             
                                 60    29       70     4             77       
                     
    
1.       
2.                                 
3.        
4.                  
5.                 
6.  0     0.5          1      2              1       5      6             
7.                      
       
                                
                                                                
                            
            
1.                 
2.                                
3.                             