[0,1,2,1,2,3,1,3,2,3,1,2,3,4,1,4,2,4,4,1,2,4,3,4,1,3,4,2,3,4,1,2,3,4,5,1,5,2,5,1,2,5,3,5,1,3,5,2,3,5,1,2,3,5,4,5,1,4,5,2,4,5,1,2,4,5,3,4,5,1,3,4,5,2,3,4,5,1,2,3,4,5,6,1,6,2,6,1,2,6,3,6,1,3,6,2,3,6,1,2,3,6,4,6,1,4]