kore ga nai wa kore ga na
kore ga nai wa kore ga na ?
k o r e WORD_BOUNDARY g a WORD_BOUNDARY n a i WORD_BOUNDARY w a WORD_BOUNDARY k o r e WORD_BOUNDARY g a WORD_BOUNDARY n a WORD_BOUNDARY
k o r e WORD_BOUNDARY g a WORD_BOUNDARY n a i WORD_BOUNDARY w a WORD_BOUNDARY k o r e WORD_BOUNDARY g a WORD_BOUNDARY n a WORD_BOUNDARY