D1212121212131323331312323132322331313232233132332313331323132322121111   >>    D121212121213132333131232313232233131323223313233231333132313232212111   <<    D1212121212131323331312323132322331313232233132332313331323132322121113   >>      D1212121212131323331312323132322331313232233132332313331323132322121112   >>