[-1,0,-1,0,1,0,1,0,1,0,1,0,1,2,1,2,1,2,1,2,1,2,3, 2,3,2,3,2,3,2,3,4,3,4,3,4,3,4,3,4,5,4,5,4,5,4,5,4, 5,6,5,6,5,6,5,6,5,6,7,6,7,6,7,6,7,6,7,8,7,8,7,8,7, 8,7,8,9,8,9,8,9,8,9,8,9,10,9,10,9,10,9,10,9,10,11, 10,11]