kan ada dua kanan kiri
kan ada dua kanan kiri .
k a n WORD_BOUNDARY a d a WORD_BOUNDARY d u a WORD_BOUNDARY k a n a n WORD_BOUNDARY k i r i WORD_BOUNDARY
k a n WORD_BOUNDARY a d a WORD_BOUNDARY d u a WORD_BOUNDARY k a n a n WORD_BOUNDARY k i r i WORD_BOUNDARY . WORD_BOUNDARY