sst ntar dulu Ai dulu
sst ntar dulu ai dulu .
s s t WORD_BOUNDARY n t a r WORD_BOUNDARY d u l u WORD_BOUNDARY a i WORD_BOUNDARY d u l u WORD_BOUNDARY
s s t WORD_BOUNDARY n t a r WORD_BOUNDARY d u l u WORD_BOUNDARY a i WORD_BOUNDARY d u l u WORD_BOUNDARY . WORD_BOUNDARY