[1,1,0,2,0,2,3,0,2,3,0,0,3,4,0,0,3,5,4,0,3,0,4,5, 0,0,0,4,6,5,0,0,4,7,0,5,6,0,4,0,0,5,7,6,0,0,0,5,8, 0,6,7,0,0,5,9,0,0,6,8,7,5,0,0,0,6,9,0,7,8,0,0,0,6, 10,0,0,7,9,8,0,6,11,0,0,0,7,10,0,6,8,9,0,0,0,0,7, 11,0,0,8,10]