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