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