notta koto aru no dore
notta koto aru no dore ?
n o t t a WORD_BOUNDARY k o t o WORD_BOUNDARY a r ɯ WORD_BOUNDARY n o WORD_BOUNDARY d o r e WORD_BOUNDARY
n o t t a WORD_BOUNDARY k o t o WORD_BOUNDARY a r u WORD_BOUNDARY n o WORD_BOUNDARY d o r e WORD_BOUNDARY