1: {0} (leaf)
2: {1} (leaf)
2: {2} (leaf)
1: {1, 2}
0: {0, 1, 2}

3: {1} (leaf)
3: {3} (leaf)
2: {1, 3}
3: {2} (leaf)
3: {4} (leaf)
2: {2, 4}
1: {1, 2, 3, 4}
3: {1} (leaf)
3: {3} (leaf)
2: {1, 3}
3: {2} (leaf)
3: {4} (leaf)
2: {2, 4}
1: {1, 2, 3, 4}
0: {1, 2, 3, 4}


2: {0} (leaf)
2: {1} (leaf)
1: {0, 1}
1: {2} (leaf)
0: {0, 1, 2}

1: {2} (leaf)
2: {0} (leaf)
2: {1} (leaf)
1: {0, 1}
0: {0, 1, 2}