ii koto kikan ko iken
ii koto kikan ko iken .
i i WORD_BOUNDARY k o t o WORD_BOUNDARY k i k a n WORD_BOUNDARY k o WORD_BOUNDARY i k e n WORD_BOUNDARY
i i WORD_BOUNDARY k o t o WORD_BOUNDARY k i k a n WORD_BOUNDARY k o WORD_BOUNDARY i k e n WORD_BOUNDARY