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