C111123313331323113313331333133313331322331313331311331311331312313231211   >>    C11112331333132311331333133313331333132233131333131133131133131231323121   <<    C111123313331323113313331333133313331322331313331311331311331312313231213   >>      C111123313331323113313331333133313331322331313331311331311331312313231212   >>