new_contents: import itertools
  import re
  
  def vowel_expand(word, max_size, vowels=['a','e','i','o','u']):
      results = []
      found_list = list(re.finditer('['+''.join(vowels)+']', word))
      for combination in itertools.product(range(0,2), repeat=len(found_list)):
          if sum(combination) == 1:
              for i, do_process in enumerate(combination):
                  if do_process:
                      position = found_list[i].span()[0]
                      character = found_list[i].group()
                      word_list = list(word)
                      repeat_number = max_size-len(word)
                      word_list.insert(position, character*repeat_number)
                      result = ''.join(word_list)
                      results.append(result)
      return results
  
subject: Create transformations.py