0 2 2 0 2 3 0 2 4
2 3 4
10 10 19 19 39 39
2 2 2 2 2 2 2 2 2 2 2 2
0 0 0 0 0 0 0 0 0 0 0 0
3 3 3 5 5 5 10 10 10 19 19 20
2 3 4 5 6 7