dakara dekinai n da yo
dakara dekinai n da yo .
d a k a r a WORD_BOUNDARY d e k i n a i WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY j o WORD_BOUNDARY
d a k a r a WORD_BOUNDARY d e k i n a i WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY y o WORD_BOUNDARY