C111123313331323113313331333133313331323133113313331311331313231323222323121   >>    C11112331333132311331333133313331333132313311331333131133131323132322232312   <<    C111123313331323113313331333133313331323133113313331311331313231323222323123   >>      C111123313331323113313331333133313331323133113313331311331313231323222323122   >>