mati dong nanti ditumpuk+tumpuk
mati dong nanti ditumpuk tumpuk .
m a t i WORD_BOUNDARY d o ŋ WORD_BOUNDARY n a n t i WORD_BOUNDARY d i t u m p u k WORD_BOUNDARY t u m p u k WORD_BOUNDARY
m a t i WORD_BOUNDARY d o n g WORD_BOUNDARY n a n t i WORD_BOUNDARY d i t u m p u k WORD_BOUNDARY t u m p u k WORD_BOUNDARY . WORD_BOUNDARY