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