input: 
  from typing import List
  
  def reverse_and_combine(words: List[str]) -> str:
      """Combines two strings and reverses the result.
      >>> reverse_and_combine(["Hello ", "world!"])
      '!dlrow olleH'
      >>> reverse_and_combine(["Python", " is fun!"])
      '!nuf si nohtyP'
      """
  
output:     combined = ''.join(words)
      return combined[::-1]