C12121212311232322331313232233132333132313133313113313233313111   >>    C1212121231123232233131323223313233313231313331311331323331311   <<    C12121212311232322331313232233132333132313133313113313233313113   >>      C12121212311232322331313232233132333132313133313113313233313112   >>