ditutupin ya Kakak Opi
ditutupin ya kakak opi .
d i t u t u p i n WORD_BOUNDARY j a WORD_BOUNDARY k a k a k WORD_BOUNDARY o p i WORD_BOUNDARY
d i t u t u p i n WORD_BOUNDARY y a WORD_BOUNDARY k a k a k WORD_BOUNDARY o p i WORD_BOUNDARY . WORD_BOUNDARY