[0, 0, 1, 0, 0]
[0, 2, 1, 0, 0]
[0, 2, 1, 3, 0]
[4, 2, 1, 3, 0]
[4, 5, 1, 3, 2]
[4, 5, 1, 3, 2]
4 5 1 3 2