1

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