O aku pernah ke pantai
o aku pernah ke pantai .
o WORD_BOUNDARY a k u WORD_BOUNDARY p ə r n a h WORD_BOUNDARY k ə WORD_BOUNDARY p a n t a i WORD_BOUNDARY
o WORD_BOUNDARY a k u WORD_BOUNDARY p e r n a h WORD_BOUNDARY k e WORD_BOUNDARY p a n t a i WORD_BOUNDARY . WORD_BOUNDARY