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