[0]
[4, [2]]
[10, [1], [3]]
[8, [3]]
[0]
[24, [3, 4]]
[4, [2]]
[20, [2], [4]]
[0]
[20, [2], [4]]
[8, [3]]
[0]
[0]
[0]
[4, [2]]
[0]
[0]
[0]
[0]
[4, [2]]
53