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