C121212123112323223313132322331323331323132312113313231323222331   >>    C12121212311232322331313232233132333132313231211331323132322233   <<    C121212123112323223313132322331323331323132312113313231323222333   >>      C121212123112323223313132322331323331323132312113313231323222332   >>