C12121223131323223313132322331323132313111122313231323132313232212111   >>    C1212122313132322331313232233132313231311112231323132313231323221211   <<    C12121223131323223313132322331323132313111122313231323132313232212113   >>      C12121223131323223313132322331323132313111122313231323132313232212112   >>