koko ni ikeba ii n da
koko ni ikeba ii n da .
k o k o WORD_BOUNDARY n i WORD_BOUNDARY i k e b a WORD_BOUNDARY i i WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY
k o k o WORD_BOUNDARY n i WORD_BOUNDARY i k e b a WORD_BOUNDARY i i WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY