[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,1,2,3,4,5,6,7, 8,9,10,11,12,13,14,15,2,3,4,5,6,7,8,9,10,11,12,13, 14,15,16,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,4, 5,6,7,8,9,10,11,12,13,14,15,16,17,18,5,6,7,8,9,10, 11,12,13]