il y a des livres
il y avoir de livre
pro:sub pro:y v:aux prep n
il y a des livres .
i l WORD_BOUNDARY i WORD_BOUNDARY a WORD_BOUNDARY d e WORD_BOUNDARY l i v ʁ WORD_BOUNDARY
i l WORD_BOUNDARY y WORD_BOUNDARY a WORD_BOUNDARY d e s WORD_BOUNDARY l i v r e s WORD_BOUNDARY