C111123313331323113313331333133313231311331121133132313231322321   >>    C11112331333132311331333133313331323131133112113313231323132232   <<    C111123313331323113313331333133313231311331121133132313231322323   >>      C111123313331323113313331333133313231311331121133132313231322322   >>