[1,2,3,3,4,5,4,5,6,6,5,6,7,7,8,6,7,8,8,9,10,7,8,9, 9,10,11,10,8,9,10,10,11,12,11,12,9,10,11,11,12,13, 12,13,14,10,11,12,12,13,14,13,14,15,15,11,12,13, 13,14,15,14,15,16,16,15,12,13,14,14,15,16,15,16, 17,17,16,17,13]