def reverse_string():
    pass


def list_check():
    pass


def remove_every_other():
    pass


def sum_pairs():
    pass


def vowel_count():
    pass


def upper_first():
    pass


def titleize():
    pass


def find_factors():
    pass


def includes():
    pass


def repeat():
    pass


def truncate():
    pass


def two_list_dictionary():
    pass


def range_in_list():
    pass


def same_frequency():
    pass


def nth():
    pass


def find_the_duplicate():
    pass


def sum_diagonals():
    pass


def min_max_key_in_dictionary():
    pass


def find_greater_numbers():
    pass


def two_oldest():
    pass


def is_odd_string():
    pass


def valid_parenthesis():
    pass


def three_odd_numbers():
    pass


def reverse_vowels():
    pass
