tu ni ni ni ni tu
tu ni ni ni ni tu .
t u WORD_BOUNDARY n i WORD_BOUNDARY n i WORD_BOUNDARY n i WORD_BOUNDARY n i WORD_BOUNDARY t u WORD_BOUNDARY
t u WORD_BOUNDARY n i WORD_BOUNDARY n i WORD_BOUNDARY n i WORD_BOUNDARY n i WORD_BOUNDARY t u WORD_BOUNDARY . WORD_BOUNDARY