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