input: def encode_message(text):
      """
      Write a python function that processes a text by flipping the case
      of all characters and replacing each vowel with the letter that is 
      two positions further in the alphabet.
      Consider only alphabetic characters.
  
      Examples:
      >>> encode_message('example')
      'gXMPLd'
      >>> encode_message('Hello World')
      'HFKKN WRRND'
      """
output:     result = []
      vowels = 'aeiouAEIOU'
      for char in text:
          if char.isalpha():
              if char in vowels:
                  new_char = chr(ord(char) + 2)
                  if char.islower():
                      new_char = new_char.upper()
                  else:
                      new_char = new_char.lower()
                  result.append(new_char)
              else:
                  if char.islower():
                      result.append(char.upper())
                  else:
                      result.append(char.lower())
          else:
              result.append(char)
      return ''.join(result)