C121212123112323223313132322331323331323331322331312323132313231211   >>    C12121212311232322331313232233132333132333132233131232313231323121   <<    C121212123112323223313132322331323331323331322331312323132313231213   >>      C121212123112323223313132322331323331323331322331312323132313231212   >>