datte wakaranai n da mon
datte wakar no da mon
conj v:c n:fml v:cop ptl:fina
datte wakaranai n da mon .
d a t t e WORD_BOUNDARY w a k a r a n a i WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY m o n WORD_BOUNDARY
d a t t e WORD_BOUNDARY w a k a r a n a i WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY m o n WORD_BOUNDARY