[0, 2, 10, 0, 10, 2, 0]
[0, 3, 6, 6, 6, 3, 0]
[0, 4, 2, 12, 2, 4, 0]
[1, 0, 9, 4, 9, 0, 1]
[1, 1, 5, 10, 5, 1, 1]
[2, 0, 0, 20, 0, 0, 2]