[0,1,2,1,2,3,2,1,2,3,4,3,4,3,4,3,4,5,4,5,6,5,4,5, 4,3,2,3,2,3,4,3,4,5,4,3,2,3,4,3,2,3,2,1,2,1,2,3,4, 3,4,5,4,3,4,3,2,3,2,3,2,3,2,1,2]