t'es allée chercher des livres
être allée chercher de livre
v:aux n v prep n
t'es allée chercher des livres ?
t ɛ z WORD_BOUNDARY a l e WORD_BOUNDARY ʃ ɛ ʁ ʃ e WORD_BOUNDARY d e WORD_BOUNDARY l i v ʁ WORD_BOUNDARY
t ' e s WORD_BOUNDARY a l l é e WORD_BOUNDARY c h e r c h e r WORD_BOUNDARY d e s WORD_BOUNDARY l i v r e s WORD_BOUNDARY