koko kara derarenai yo
koko kara derarenai yo .
k o k o WORD_BOUNDARY k a r a WORD_BOUNDARY d e r a r e n a i WORD_BOUNDARY j o WORD_BOUNDARY
k o k o WORD_BOUNDARY k a r a WORD_BOUNDARY d e r a r e n a i WORD_BOUNDARY y o WORD_BOUNDARY