[0,1,2,3,3,4,5,6,4,5,6,7,7,8,9,10,5,6,7,8,8,9,10, 11,9,10,11,12,12,13,14,15,6,7,8,9,9,10,11,12,10, 11,12,13,13,14,15,16,11,12,13,14,14,15,16,17,15, 16,17,18,18,19,20,21,7,8,9,10,10,11,12,13,11,12, 13,14,14,15,16]