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