bukan tu kan pintu tu
bukan tu kan pintu tu .
b u k a n WORD_BOUNDARY t u WORD_BOUNDARY k a n WORD_BOUNDARY p i n t u WORD_BOUNDARY t u WORD_BOUNDARY
b u k a n WORD_BOUNDARY t u WORD_BOUNDARY k a n WORD_BOUNDARY p i n t u WORD_BOUNDARY t u WORD_BOUNDARY . WORD_BOUNDARY