6 6 7 5 2 July 8, 2019 16 32 64 128 6 6 7 5 1 2 6 7 6 5 * 0 2 6 7 5 21 6 7 5 2 4 6 7 5 22 6 7 5 2 3 6 7 5 2 8 6 5 6 7 2 9 6 7 5 2 height difference
