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