0 0 1 0 0 1 1
1 1 2 0 0 1 1
2 2 3 0 0 1 1
3 3 4 0 0 1 1
4 4 5 0 0 1 1
5 5 6 0 0 1 1 
6 6 7 0 0 1 1 
7 7 8 0 0 1 1 
8 8 9 0 0 1 1 
9 9 10 0 0 1 1 
10 10 11 0 0 1 1 
11 11 0 0 0 1 1