[0,6,3,2,3,5,1,5,4,3,4,6,2,6,5,4,5,7,3,7,6,5,6,8, 4,8,7,6,7,9,5,9,8,7,8,10,6,10,9,8,9,11,7,11,10,9, 10,12,8,12,11,10,11,13,9,13,12,11,12,14,10,14,13, 12,13,15,11,15,14,13,14,16,12,16,15,14]