19
0, 0, 3
0, 2, 8
0, 6, 6
1, 1, 6
1, 6, 4
2, 3, 8
2, 7, 1
3, 0, 2
3, 3, 9
4, 2, 5
4, 8, 2
5, 5, 7
5, 8, 6
6, 1, 2
6, 7, 6
7, 2, 9
7, 7, 3
8, 2, 1
8, 6, 5