D1212121212131323331312323132322331313232233132313223313331323132222331   >>    D121212121213132333131232313232233131323223313231322331333132313222233   <<    D1212121212131323331312323132322331313232233132313223313331323132222333   >>      D1212121212131323331312323132322331313232233132313223313331323132222332   >>