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