text: #!/usr/bin/env python3
  
  """
      Exercise 07: Ubbi Dubbi
  
      Convert a word into a "Ubbi Dubbi". Sort of.
  """
  
  
  def ubbi_dubbi(word):
  
      ubbi_letters = []
  
      for letter in word:
          ubbi_letters.append('ub' + letter if letter in 'aeiou' else letter)
  
      return ''.join(ubbi_letters)
  
  
  if __name__ == '__main__':
  
      for word in ('milk', 'octopus', 'soap', 'bop', 'banana'):
          print(f'"{word}" ubbi dubbis to "{ubbi_dubbi(word)}".')
  