[0,0,0,1,2,0,1,3,0,4,2,5,0,6,3,7,0,4,1,5,8,9,2,6, 10,0,11,3,12,7,1,8,13,4,14,9,5,15,2,0,16,10,11,3, 17,12,18,0,6,19,7,20,13,4,21,0,14,22,15,8,1,23,16, 24,5,9,25,2,17,26,10,6,27,18,0,28,11,19,1,20,3,29, 7,30]