il n' écoute rien
il ne écoute rien
pro:sub neg n n
il n' écoute rien .
i l WORD_BOUNDARY  ɛ n WORD_BOUNDARY e k u t WORD_BOUNDARY ʁ i ɛ̃ WORD_BOUNDARY
i l WORD_BOUNDARY n ' WORD_BOUNDARY é c o u t e WORD_BOUNDARY r i e n WORD_BOUNDARY