input: Write a function to combine two strings and return the reversed result in Python.
  
  def combine_and_reverse(word1, word2):
      combined = word1 + word2
      result = combined[::-1]
      return result
  
  assert combine_and_reverse("Hello ", "world!") == "!dlrow olleH"
  assert combine_and_reverse("Good ", "morning!") == "!gninrom dooG"
  assert combine_and_reverse("Python ", "Rocks!") == "!skcoR nohtyP"
  assert combine_and_reverse("", "coding") == "gnidoc"
  assert combine_and_reverse("", "") == ""
output: def combine_and_reverse(word1, word2):
      combined = word1 + word2
      result = combined[::-1]
      return result