def __surname_triplet(input_string):
    """__surname_triplet(input_string) -> string"""
    consonants, vowels = __consonants_and_vowels(input_string)

    return __common_triplet(input_string, consonants, vowels)
def __surname_triplet(input_string):
    """__surname_triplet(input_string) -> string"""
    consonants, vowels = __consonants_and_vowels(input_string)

    return __common_triplet(input_string, consonants, vowels)
def __surname_triplet ( input_string ) : consonants , vowels = __consonants_and_vowels ( input_string ) return __common_triplet ( input_string , consonants , vowels )
__surname_triplet(input_string) -> string
__surname_triplet ( input_string ) - > string