dua tambah satu dua tambah satu
dua tambah satu dua tambah satu !
d u a WORD_BOUNDARY t a m b a h WORD_BOUNDARY s a t u WORD_BOUNDARY d u a WORD_BOUNDARY t a m b a h WORD_BOUNDARY s a t u WORD_BOUNDARY
d u a WORD_BOUNDARY t a m b a h WORD_BOUNDARY s a t u WORD_BOUNDARY d u a WORD_BOUNDARY t a m b a h WORD_BOUNDARY s a t u WORD_BOUNDARY ! WORD_BOUNDARY