[1,2,3,2,4,3,5,3,6,5,4,7,5,4,8,6,5,9,7,5,10,8,7,6, 11,8,7,6,12,10,9,7,13,10,9,7,14,11,9,8,15,12,11, 10,8,16,13,12,11,9,17,13,12,11,9,18,15,13,12,10, 19,15,13,12,10,20,16,15,13,11,21,17,16,15,14,11]