0 0 -> 0
1 0 -> 9
1 1 -> 1
2 0 -> 3
2 1 -> 10
2 2 -> 2
3 0 -> 12
3 1 -> 4
3 2 -> 11
4 0 -> 6
4 1 -> 13
4 2 -> 5
5 0 -> 15
5 1 -> 7
5 2 -> 14
6 1 -> 16
6 2 -> 8
7 2 -> 17
