 18 15 7
0 0 1 0 0 0 0 1 1 1 0 0 0 0 1 1 1 0
 7 15 18
 4 10 12
 3 11 14
 2 12 16
 4 14 16
 3 4 6
 1 4 8
 5 6 9
 6 8 18
 1 3 18
 2 5 17
 3 5 7
 12 14 15
 5 9 18
 12 13 15
