atama tokana kaerarehen yo
atama tokana kaerarehen yo .
a t a m a WORD_BOUNDARY t o k a n a WORD_BOUNDARY k a e r a r e h e n WORD_BOUNDARY j o WORD_BOUNDARY
a t a m a WORD_BOUNDARY t o k a n a WORD_BOUNDARY k a e r a r e h e n WORD_BOUNDARY y o WORD_BOUNDARY