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