def f(a, b, prefix=">", suffix="<"):
    print(prefix, a, b, suffix)


if __name__ == "__main__":
    f(1, 2)
    f(a=1, b=2)
    f(b=2, a=1)
    f(1, 2, prefix=":")
    f(1, 2, suffix=":")
    f(1, 2, suffix=":", prefix="?")
    f(suffix=":", prefix="?", b=2, a=1)
    f(1, 2, suffix=":", prefix="?")
    f(1, prefix="?", b=2)