koko ni nokkereba ii no
koko ni nokkereba ii no ?
k o k o WORD_BOUNDARY n i WORD_BOUNDARY n o k k e r e b a WORD_BOUNDARY i i WORD_BOUNDARY n o WORD_BOUNDARY
k o k o WORD_BOUNDARY n i WORD_BOUNDARY n o k k e r e b a WORD_BOUNDARY i i WORD_BOUNDARY n o WORD_BOUNDARY