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