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