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