etto naa kono iro wa
etto naa kono iro wa ?
e t t o WORD_BOUNDARY n aː WORD_BOUNDARY k o n o WORD_BOUNDARY i r o WORD_BOUNDARY w a WORD_BOUNDARY
e t t o WORD_BOUNDARY n a a WORD_BOUNDARY k o n o WORD_BOUNDARY i r o WORD_BOUNDARY w a WORD_BOUNDARY