line = "3 1 / 3 1 5\n"
line = "3 1 3\n"
line = "1 5/          1 1 1/11 3 15     /3 3 3     3/1\n"
line = "1\n"
line = "1 5/          1 1 1/11 3 15     /3 3 3     3/1\n"
line = "3 1 3\n"
line = "3 1 / 3 1 5\n"