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