a tate ni natteru kara
a tate ni natteru kara .
a WORD_BOUNDARY t a t e WORD_BOUNDARY n i WORD_BOUNDARY n a t t e r ɯ WORD_BOUNDARY k a r a WORD_BOUNDARY
a WORD_BOUNDARY t a t e WORD_BOUNDARY n i WORD_BOUNDARY n a t t e r u WORD_BOUNDARY k a r a WORD_BOUNDARY