2  2 0.250719 
3  
6  
6  
6  
7  
1  1 
2  1 0.441581 
4  0.379613 
4  0.171155 
5  
3  
4  0.304915 
7  
2  2 0.042812 
6  
6  
7  
3  
3  
5  
1  3 
2  1 0.988586 
