naka da kara nai ne
naka da kara nai ne .
n a k a WORD_BOUNDARY d a WORD_BOUNDARY k a r a WORD_BOUNDARY n a i WORD_BOUNDARY n e WORD_BOUNDARY
n a k a WORD_BOUNDARY d a WORD_BOUNDARY k a r a WORD_BOUNDARY n a i WORD_BOUNDARY n e WORD_BOUNDARY