anchor.diff:  uyủ,wiu
   uà,wa
   uài,waj
  -uày,wăj
  +uày,wăj
   uá,wa
   uái,waj
  -uáy,wăj
  +uáy,wăj
   uâ,wɤ̆
   uây,wɤ̆j
   uã,wa
   uãi,waj
  -uãy,wăj
  +uãy,wăj
   uè,wɛ
   uèo,wew
   ué,wɛ
  
positive.code: ạ,a
  ại,aj
  ạo,aw
  ạu,ăw
  ạy,ăj
  ả,a
  ải,aj
  ảo,aw
  ảu,ăw
  ảy,ăj
  ấ,ɤ̆
  ấu,ɤ̆w
  ấy,ɤ̆j
  
negative.code: uôi,uəj
  uý,wi
  uýu,wiu
  uă,wă
  uơ,wɤ
  uạ,wa
  uại,waj
  uạy,wăj
  uả,wa
  uải,waj
  uảy,wăj
  uấ,wɤ̆
  uấy,wɤ̆j
  uầ,wɤ̆
  