1, 10, 11, 12, 13, 14, 15, 16, 17, 18/1, 18/2, 18/3, 18/4, 18/5, 18/6, 19, 2, 20, 21, 22, 23, 24, 25, 26, 27, 28, 3, 4, 5, 6, 7, 9