has ido a la escuela
has ido a la escuela ?
a s WORD_BOUNDARY i ð o WORD_BOUNDARY a WORD_BOUNDARY l a WORD_BOUNDARY e s k w e l a WORD_BOUNDARY
h a s WORD_BOUNDARY i d o WORD_BOUNDARY a WORD_BOUNDARY l a WORD_BOUNDARY e s c u e l a WORD_BOUNDARY