wakannai n da kedo ne
wakannai n da kedo ne .
w a k a n n a i WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY k e d o WORD_BOUNDARY n e WORD_BOUNDARY
w a k a n n a i WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY k e d o WORD_BOUNDARY n e WORD_BOUNDARY