input: 
  def reverse_combined_strings(word1: str, word2: str) -> str:
      """ Combines two strings and returns the result in reverse order.
      >>> reverse_combined_strings("Hello ", "world!")
      '!dlrow olleH'
      >>> reverse_combined_strings("Python ", "code")
      'edoc nohtyP'
      """
  
output:     combined = word1 + word2
      return combined[::-1]