va a la escuela no
va a la escuela no ?
β a WORD_BOUNDARY a WORD_BOUNDARY l a WORD_BOUNDARY e̞ s k w e̞ l a WORD_BOUNDARY n o̞ WORD_BOUNDARY
v a WORD_BOUNDARY a WORD_BOUNDARY l a WORD_BOUNDARY e s c u e l a WORD_BOUNDARY n o WORD_BOUNDARY ? WORD_BOUNDARY