def  snake_case						(__lowercase ,      __lowercase						)	->	list[str]:

      '''simple docstring'''



      return [sentence[i : i + ngram_size] for i in range(len(__lowercase						) - ngram_size + 1						)]


if __name__ == "__main__":
    from doctest import testmod

    testmod()
def  snake_case						(__lowercase						)	->	list:

						'''simple docstring'''



						return [
						    txt[:a] + txt[a].upper() + txt[a + 1 :]
						    for a in range(len(__lowercase						)						)
						    if txt[a].isalpha()
						]


if __name__ == "__main__":
				__import__('doctest').testmod()