nan tte yutta ka wakaranai
nan tte yutta ka wakaranai .
n a n WORD_BOUNDARY t t e WORD_BOUNDARY j ɯ t t a WORD_BOUNDARY k a WORD_BOUNDARY w a k a r a n a i WORD_BOUNDARY
n a n WORD_BOUNDARY t t e WORD_BOUNDARY y u t t a WORD_BOUNDARY k a WORD_BOUNDARY w a k a r a n a i WORD_BOUNDARY