0 0 1 1 0 0 
1 1 0 0 0 0 
2 0 1 0 0 0 
3 1 1 1 1 0 
4 0 0 0 1 1 
5 1 1 0 0 0 
6 0 1 1 0 0 
1 1 0 0 0 0 
7 0 1 0 1 0 
8 1 1 1 1 1 


nodes: 69