8 1G2J-2D
1 c 0 2 0 1
2 C 1 3 0 2
3 C 2 4 0 3
4 c 3 5 0 4
5 G 4 6 0 5
6 G 5 7 0 6
7 G 6 8 0 7
8 G 7 0 0 8