hikkakatte iru no kanaa
hikkakatte iru no kanaa .
h i k k a k a t t e WORD_BOUNDARY i r ɯ WORD_BOUNDARY n o WORD_BOUNDARY k a n aː WORD_BOUNDARY
h i k k a k a t t e WORD_BOUNDARY i r u WORD_BOUNDARY n o WORD_BOUNDARY k a n a a WORD_BOUNDARY