ntar dulu Op Opi Opi
ntar dulu op opi opi .
n t a r WORD_BOUNDARY d u l u WORD_BOUNDARY  o p WORD_BOUNDARY o p i WORD_BOUNDARY  o p i WORD_BOUNDARY
n t a r WORD_BOUNDARY d u l u WORD_BOUNDARY o p WORD_BOUNDARY o p i WORD_BOUNDARY o p i WORD_BOUNDARY