[0,1,2,1,2,3,2,3,4,1,2,3,2,3,4,3,4,5,2,3,4,3,4,5, 4,5,6,1,2,3,2,3,4,3,4,5,2,3,4,3,4,5,4,5,6,3,4,5,4, 5,6,5,6,7,2,3,4,3,4,5,4,5,6,3,4,5,4,5,6,5,6,7,4,5, 6,5,6,7,6,7,8,1,2,3,2,3,4,3,4,5,2,3,4,3,4,5,4,5,6, 3,4,5,4,5,6]