C111123313331323113313331333133313331323133112113313231333131133132313223331   >>    C11112331333132311331333133313331333132313311211331323133313113313231322333   <<    C111123313331323113313331333133313331323133112113313231333131133132313223333   >>      C111123313331323113313331333133313331323133112113313231333131133132313223332   >>