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