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