C11112233213331323123231323131323132313232233132313123232223221   >>    C1111223321333132312323132313132313231323223313231312323222322   <<    C11112233213331323123231323131323132313232233132313123232223223   >>      C11112233213331323123231323131323132313232233132313123232223222   >>