D1212121212131323331312323132322331313232233132332313331323222111   >>    D121212121213132333131232313232233131323223313233231333132322211   <<    D1212121212131323331312323132322331313232233132332313331323222113   >>      D1212121212131323331312323132322331313232233132332313331323222112   >>