11, 19, 20, 9
11, 19, 20, 9, 1-10, 10, 12, 13, 14, 15, 16, 17, 18
11, 19, 20, 9, 1-10, 10, 12, 13, 14, 15, 16, 17, 18, 1, 1-7, 2, 3, 4, 5, 6, 7, 8