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