D1212121212131323331312323132322331313232233132313223313331323131113231323111   >>    D121212121213132333131232313232233131323223313231322331333132313111323132311   <<    D1212121212131323331312323132322331313232233132313223313331323131113231323113   >>      D1212121212131323331312323132322331313232233132313223313331323131113231323112   >>