15, 20, 25, 30, 32, 33, 35, 37, 38, 40, 0, 1, 10, 11, 12, 13, 14, 16, 17, 18, 19, 2, 21, 22, 23, 24, 26, 27, 28, 29, 3, 31, 34, 36, 39, 4, 5, 6, 7, 8, 9