faut en placer un
falloir en placer un
v:mdl prep n pro
faut en placer un .
f o t WORD_BOUNDARY ɑ̃ WORD_BOUNDARY p l a s e WORD_BOUNDARY œ̃ WORD_BOUNDARY
f a u t WORD_BOUNDARY e n WORD_BOUNDARY p l a c e r WORD_BOUNDARY u n WORD_BOUNDARY