C12121212311232322331313232233132313331323331323223313232313111   >>    C1212121231123232233131323223313231333132333132322331323231311   <<    C12121212311232322331313232233132313331323331323223313232313113   >>      C12121212311232322331313232233132313331323331323223313232313112   >>