C11112233213331323123231323131323132313232233132313112331313231323211   >>    C1111223321333132312323132313132313231323223313231311233131323132321   <<    C11112233213331323123231323131323132313232233132313112331313231323213   >>      C11112233213331323123231323131323132313232233132313112331313231323212   >>