C12121212311232322331313232233132313331323331323123231323223311   >>    C1212121231123232233131323223313231333132333132312323132322331   <<    C12121212311232322331313232233132313331323331323123231323223313   >>      C12121212311232322331313232233132313331323331323123231323223312   >>