C121212123112323223313132322331323132333132312113313231323132322311   >>    C12121212311232322331313232233132313233313231211331323132313232231   <<    C121212123112323223313132322331323132333132312113313231323132322313   >>      C121212123112323223313132322331323132333132312113313231323132322312   >>