nani o kaite iru no
nani o kaite iru no ?
n a n i WORD_BOUNDARY o WORD_BOUNDARY k a i t e WORD_BOUNDARY i r ɯ WORD_BOUNDARY n o WORD_BOUNDARY
n a n i WORD_BOUNDARY o WORD_BOUNDARY k a i t e WORD_BOUNDARY i r u WORD_BOUNDARY n o WORD_BOUNDARY