vas a comprar otra cosa
vas a comprar otra cosa ?
b a s WORD_BOUNDARY a WORD_BOUNDARY k o m p ɾ a ɾ WORD_BOUNDARY o t ɾ a WORD_BOUNDARY k o s a WORD_BOUNDARY
v a s WORD_BOUNDARY a WORD_BOUNDARY c o m p r a r WORD_BOUNDARY o t r a WORD_BOUNDARY c o s a WORD_BOUNDARY