D1212121212131323331312323132322331313232233132313223313331323112113321   >>    D121212121213132333131232313232233131323223313231322331333132311211332   <<    D1212121212131323331312323132322331313232233132313223313331323112113323   >>      D1212121212131323331312323132322331313232233132313223313331323112113322   >>