D1212121212131323331312323132322331313232233132322331311331333131111211   >>    D121212121213132333131232313232233131323223313232233131133133313111121   <<    D1212121212131323331312323132322331313232233132322331311331333131111213   >>      D1212121212131323331312323132322331313232233132322331311331333131111212   >>