C121212123112323223313132322331323331323331322331313233313231323223311   >>    C12121212311232322331313232233132333132333132233131323331323132322331   <<    C121212123112323223313132322331323331323331322331313233313231323223313   >>      C121212123112323223313132322331323331323331322331313233313231323223312   >>