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