wakaranai nani itteru ka
wakaranai nani itteru ka .
w a k a r a n a i WORD_BOUNDARY n a n i WORD_BOUNDARY i t t e r ɯ WORD_BOUNDARY k a WORD_BOUNDARY
w a k a r a n a i WORD_BOUNDARY n a n i WORD_BOUNDARY i t t e r u WORD_BOUNDARY k a WORD_BOUNDARY