a comprar una cosita
a compra un cosa
prepart inf det:art n
a comprar una cosita .
a WORD_BOUNDARY k o̞ m p ɾ a ɾ WORD_BOUNDARY u n a WORD_BOUNDARY k o̞ s i t a WORD_BOUNDARY
a WORD_BOUNDARY c o m p r a r WORD_BOUNDARY u n a WORD_BOUNDARY c o s i t a WORD_BOUNDARY . WORD_BOUNDARY