C111123313331323113313331333133313231323133313133313231311331311333213321   >>    C11112331333132311331333133313331323132313331313331323131133131133321332   <<    C111123313331323113313331333133313231323133313133313231311331311333213323   >>      C111123313331323113313331333133313231323133313133313231311331311333213322   >>