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