input: 
  def reverse_combined_strings(words: str, words2: str) -> str:
      """ Combines two strings and returns the result in reverse order.
      >>> reverse_combined_strings("Hello ", "world!")
      '!dlrow olleH'
      >>> reverse_combined_strings("Python", "Programming")
      'gnimmargorP nohtyP'
      """
  
output:     combined = words + words2
      return combined[::-1]