pan aum pan pan aum
pan aum pan pan aum
n co n n co
pan aum pan pan aum .
p a n WORD_BOUNDARY a u m WORD_BOUNDARY p a n WORD_BOUNDARY p a n WORD_BOUNDARY a u m WORD_BOUNDARY
p a n WORD_BOUNDARY a u m WORD_BOUNDARY p a n WORD_BOUNDARY p a n WORD_BOUNDARY a u m WORD_BOUNDARY . WORD_BOUNDARY