il est tombé en_arrière
il être tomber en_arrière
pro:sub v:aux part adv:place
il est tombé en arrière .
i l WORD_BOUNDARY ɛ WORD_BOUNDARY t ɔ̃ b e WORD_BOUNDARY ɑ̃ n WORD_BOUNDARY a ʁ j ɛ ʁ WORD_BOUNDARY
i l WORD_BOUNDARY e s t WORD_BOUNDARY t o m b é WORD_BOUNDARY e n WORD_BOUNDARY a r r i è r e WORD_BOUNDARY