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