[0,1,2,1,3,3,1,2,4,5,4,5,1,2,3,3,5,7,7,8,5,7,7,8, 1,2,3,3,4,5,4,5,6,9,10,11,9,12,11,13,6,9,10,11,9, 12,11,13,1,2,3,3,4,5,4,5,5,7,7,8,5,7,7,8,7,11,13, 14,13,17,15,18,11,16,17,19,14]