input: def reverse_combined_strings(words: str, words2: str) -> str:
      """ Combines two given strings and then reverses the combined result.
      >>> reverse_combined_strings("Hello ", "world!")
      '!dlrow olleH'
      >>> reverse_combined_strings("Python ", "Rules!")
      '!seluR nohtyP'
      """
output:     combined = words + words2
      return combined[::-1]