esta va a comprar sí
esta va a comprar sí .
e̞ s t a WORD_BOUNDARY β a WORD_BOUNDARY a WORD_BOUNDARY k o̞ m p ɾ a ɾ WORD_BOUNDARY s i WORD_BOUNDARY
e s t a WORD_BOUNDARY v a WORD_BOUNDARY a WORD_BOUNDARY c o m p r a r WORD_BOUNDARY s í WORD_BOUNDARY . WORD_BOUNDARY