D1212121212131323331312323132322331313232233132313223313131323132313223321   >>    D121212121213132333131232313232233131323223313231322331313132313231322332   <<    D1212121212131323331312323132322331313232233132313223313131323132313223323   >>      D1212121212131323331312323132322331313232233132313223313131323132313223322   >>