grind_rate = [ [ 100, 0, 0, 0, 0, 0, 0, 0, 0,], [ 33, 29, 19, 19, 0, 0, 0, 0, 0,], [ 30, 22, 19, 14, 9, 6, 0, 0, 0,], [ 28, 14, 13, 12, 10, 8, 6, 5, 4,],]