nunca viste un cisne
nunca viste un cisne ?
n u n k a WORD_BOUNDARY β i s t e̞ WORD_BOUNDARY u n WORD_BOUNDARY s i s n e̞ WORD_BOUNDARY
n u n c a WORD_BOUNDARY v i s t e WORD_BOUNDARY u n WORD_BOUNDARY c i s n e WORD_BOUNDARY ? WORD_BOUNDARY