itte iru koto wakaru
itte iru koto wakaru ?
i t t e WORD_BOUNDARY i r ɯ WORD_BOUNDARY k o t o WORD_BOUNDARY w a k a r ɯ WORD_BOUNDARY
i t t e WORD_BOUNDARY i r u WORD_BOUNDARY k o t o WORD_BOUNDARY w a k a r u WORD_BOUNDARY