def x0():
    pass

def x1(arg1):
    pass

def x2(arg1, arg2):
    pass

def x3a(*args):
    pass

def x3b(**kwargs):
    pass

def x3c(*args, **kwargs):
    pass

def x4a(foo, bar = 1, bla = 2, *args):
    pass

def x4b(foo, bar = 1, bla = 2, **kwargs):
    pass

def x4c(foo, bar = 1, bla = 2, *args, **kwargs):
    pass

def func_with_tuple_args((a, b)):
    print a
    print b

def func_with_tuple_args2((a, b), (c, d)):
    print a
    print c

def func_with_tuple_args3((a, b), (c, d), *args):
    print a
    print c

def func_with_tuple_args4((a, b), (c, d), **kwargs):
    print a
    print c

def func_with_tuple_args5((a, b), (c, d), *args, **kwargs):
    print a
    print c

def func_with_tuple_args6((a, b), (c, d) = (2, 3), *args, **kwargs):
    print a
    print c