C11112233213331323123231323131323132313232233132313112113313232121   >>    C1111223321333132312323132313132313231323223313231311211331323212   <<    C11112233213331323123231323131323132313232233132313112113313232123   >>      C11112233213331323123231323131323132313232233132313112113313232122   >>