1 2 3 4 5 6 7 8 9 10 11 12 13 14
{ "right": { "1": 2, "2": 4, "3": 6 }, "nodes": [1, 2, 3, 4, 5, 6, 7, 8], "left": { "1": 3, "2": 5, "3": 7, "7": 8 } }