code: def apply_T12(word):
      '''There is a syllable boundary within a VV sequence of two nonidentical
      vowels that are not a genuine diphthong, e.g., [ta.e], [ko.et.taa].'''
      WORD = word
      offset = 0
  
      for vv in new_vv(WORD):
          # import pdb; pdb.set_trace()
          seq = vv.group(1)
  
          if not is_diphthong(seq) and not is_long(seq):
              i = vv.start(1) + 1 + offset
              WORD = WORD[:i] + '.' + WORD[i:]
              offset += 1
  
      RULE = ' T2' if word != WORD else ''
  
      return WORD, RULf apply_T12(word):
      '''There is a syllable boundary within a VV sequence of two nonidentical
      vowels that are not a genuine diphthong, e.g., [ta.e], [ko.et.taa].'''
      WORD = word
      offset = 0
  
      for vv in new_vv(WORD):
          # import pdb; pdb.set_trace()
          seq = vv.group(1)
  
          if not is_diphthong(seq) and not is_long(seq):
              i = vv.start(1) + 1 + offset
              WORD = WORD[:i] + '.' + WORD[i:]
              offset += 1
  
      RULE = ' T2' if word != WORD else ''
  
      return WORD, RULE
docs: There is a syllable boundary within a VV sequence of two nonidentical
      vowels that are not a genuine diphthong, e.g., [ta.e], [ko.et.taa].