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