C121212123112323223313132322331323331323331322331323331313311212121   >>    C12121212311232322331313232233132333132333132233132333131331121212   <<    C121212123112323223313132322331323331323331322331323331313311212123   >>      C121212123112323223313132322331323331323331322331323331313311212122   >>