un kaeru waratteru ne
un kaeru waratteru ne .
ɯ n WORD_BOUNDARY k a e r ɯ WORD_BOUNDARY w a r a t t e r ɯ WORD_BOUNDARY n e WORD_BOUNDARY
u n WORD_BOUNDARY k a e r u WORD_BOUNDARY w a r a t t e r u WORD_BOUNDARY n e WORD_BOUNDARY