nan demo nai nan demo nai nan demo nai
nan demo nai nan demo nai nan demo nai .
n a n WORD_BOUNDARY d e m o WORD_BOUNDARY n a i WORD_BOUNDARY n a n WORD_BOUNDARY d e m o WORD_BOUNDARY n a i WORD_BOUNDARY n a n WORD_BOUNDARY d e m o WORD_BOUNDARY n a i WORD_BOUNDARY
n a n WORD_BOUNDARY d e m o WORD_BOUNDARY n a i WORD_BOUNDARY n a n WORD_BOUNDARY d e m o WORD_BOUNDARY n a i WORD_BOUNDARY n a n WORD_BOUNDARY d e m o WORD_BOUNDARY n a i WORD_BOUNDARY