doko itta koto aru no
doko itta koto aru no ?
d o k o WORD_BOUNDARY i t t a WORD_BOUNDARY k o t o WORD_BOUNDARY a r ɯ WORD_BOUNDARY n o WORD_BOUNDARY
d o k o WORD_BOUNDARY i t t a WORD_BOUNDARY k o t o WORD_BOUNDARY a r u WORD_BOUNDARY n o WORD_BOUNDARY