D1212121212131323331312323132322331313232233132313223313111323131   >>    D121212121213132333131232313232233131323223313231322331311132313   <<    D1212121212131323331312323132322331313232233132313223313111323133   >>      D1212121212131323331312323132322331313232233132313223313111323132   >>