def equlize_size(lst):
    """
    Equalize size of incoming iterables

    :param args: 2-dimensional iterables
    :return: tuple of tuples
    """

    max_size = max(map(lambda x: len(x), lst))
    ret = []

    for v in lst:
        ret.append(tuple(v) + (('', ''),) * (max_size - len(v)))

    return tuple(ret)