ao ga nai no ao ga nai no
ao ga nai no ao ga nai no ?
a o WORD_BOUNDARY g a WORD_BOUNDARY n a i WORD_BOUNDARY n o WORD_BOUNDARY a o WORD_BOUNDARY g a WORD_BOUNDARY n a i WORD_BOUNDARY n o WORD_BOUNDARY
a o WORD_BOUNDARY g a WORD_BOUNDARY n a i WORD_BOUNDARY n o WORD_BOUNDARY a o WORD_BOUNDARY g a WORD_BOUNDARY n a i WORD_BOUNDARY n o WORD_BOUNDARY