[1,3,4,5,6,7,7,8,8,9,9,10,10,10,11,11,11,11,12,12, 12,12,12,13,13,13,13,13,13,14,14,14,14,14,14,15, 14,15,15,15,15,16,15,15,15,16,15,16,16,16,16,16, 16,17,16,17,16,17,17,16,17,17,17,17,17,18,17,17, 17,17,17,19,17,18,18,17,18,18,18,18,18,19,18]