Mami Papi Mami Papi
mami papi mami papi .
m a m i WORD_BOUNDARY p a p i WORD_BOUNDARY m a m i WORD_BOUNDARY p a p i WORD_BOUNDARY
m a m i WORD_BOUNDARY p a p i WORD_BOUNDARY m a m i WORD_BOUNDARY p a p i WORD_BOUNDARY . WORD_BOUNDARY