[1,1,0,1,2,0,0,2,3,0,0,0,3,4,0,0,0,0,4,5,0,0,0,0, 0,5,6,0,0,0,0,0,0,6,7,0,0,0,0,0,0,0,7,8,0,0,0,0,0, 0,0,0,8,9,0]