D1212121212131323331312323132322331313232233132313223313231322131111   >>    D121212121213132333131232313232233131323223313231322331323132213111   <<    D1212121212131323331312323132322331313232233132313223313231322131113   >>      D1212121212131323331312323132322331313232233132313223313231322131112   >>