anchor.diff:  x,ks
   z,z
   a,a
  -à,a
  -â,ɑ
  +à,a
  +â,ɑ
   ai,ɛ
   ain,ɛn
  -aî,ɛ
  -aï,ai
  +aî,ɛ
  +aï,ai
   aie,ɛ
   aou,au
  -aoû,au
  +aoû,au
   au,o
   ay,ɛ
   aye,ɛj
   e,ə
  -é,e
  -ée,e
  -è,ɛ
  -ê,ɛ
  +é,e
  +ée,e
  +è,ɛ
  +ê,ɛ
   ɛ,ɛ
   eau,o
   ei,ɛ
  -eî,ɛ
  +eî,ɛ
   eu,œ
  -eû,ø
  +eû,ø
   i,i
  -î,i
  -ï,j
  +î,i
  +ï,j
   ie,i
   o,ɔ
  -ô,o
  +ô,o
   œ,œ
   oe,oe
  -oê,wa
  -oë,ɔɛ
  +oê,wa
  +oë,ɔɛ
   œu,œ
   oi,wa
   oie,wa
  -oï,oi
  +oï,oi
   ou,u
  -oû,u
  +oû,u
   oue,u
   oy,way
   u,y
  -û,y
  +û,y
   ue,ɥɛ
   ɥ,ɥ
   cqu,k
  
positive.code: gu,ɡ
  il,il
  ill,ij
  ẫ,ɑ̃
  aî̃,ɛ̃
  œ̃,œ̃
  ien,jɛ̃
  õ,ɔ̃
  uẽ,ɥɛ̃
  ouễ,wɛ̃
  
negative.code: Orth,Phon
  b,b
  bb,b
  ç,s
  c,k
  ch,ʃ
  d,d
  