il est tu tombé
il être taire tomber
pro:sub v:aux part part
il est tu tombé ?
i l WORD_BOUNDARY ɛ WORD_BOUNDARY t y WORD_BOUNDARY t ɔ̃ b e WORD_BOUNDARY
i l WORD_BOUNDARY e s t WORD_BOUNDARY t u WORD_BOUNDARY t o m b é WORD_BOUNDARY