itteru koto ga wakaranakatta
iw koto ga wakar
v:c n:fml ptl:case v:c
itteru koto ga wakaranakatta ?
i t t e r ɯ WORD_BOUNDARY k o t o WORD_BOUNDARY g a WORD_BOUNDARY w a k a r a n a k a t t a WORD_BOUNDARY
i t t e r u WORD_BOUNDARY k o t o WORD_BOUNDARY g a WORD_BOUNDARY w a k a r a n a k a t t a WORD_BOUNDARY