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