eso es un libro
eso es un libro ?
e̞ s o̞ WORD_BOUNDARY e̞ s WORD_BOUNDARY u n WORD_BOUNDARY l i β ɾ o̞ WORD_BOUNDARY
e s o WORD_BOUNDARY e s WORD_BOUNDARY u n WORD_BOUNDARY l i b r o WORD_BOUNDARY ? WORD_BOUNDARY