input: def combine_and_reverse(words: str, words2: str) -> str:
      """ Combines two strings and returns the reversed result of the combination.
      >>> combine_and_reverse("Hello ", "world!")
      '!dlrow olleH'
      >>> combine_and_reverse("Python ", "code")
      'edoc nohtyP'
      """
output:     combined = words + words2
      return combined[::-1]