C121212123112323223313132322331323132333132312113313231323123121   >>    C12121212311232322331313232233132313233313231211331323132312312   <<    C121212123112323223313132322331323132333132312113313231323123123   >>      C121212123112323223313132322331323132333132312113313231323123122   >>