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