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