input: from typing import List
  
  def combine_and_reverse(words1: str, words2: str) -> str:
      """Combine two given strings and reverse the result.
      >>> combine_and_reverse("Hello ", "world!")
      '!dlrow olleH'
      >>> combine_and_reverse("Python", " is fun!")
      '!nuf si nohtyP'
      """
output:     combined = words1 + words2
      return combined[::-1]