quen vai a escuela
quen vai a escuela ?
k e̞ n WORD_BOUNDARY β a i WORD_BOUNDARY a WORD_BOUNDARY e̞ s k w e̞ l a WORD_BOUNDARY
q u e n WORD_BOUNDARY v a i WORD_BOUNDARY a WORD_BOUNDARY e s c u e l a WORD_BOUNDARY ? WORD_BOUNDARY