D2311231323331322331313232233132322132322233231323133313232213111   >>    D231123132333132233131323223313232213232223323132313331323221311   <<    D2311231323331322331313232233132322132322233231323133313232213113   >>      D2311231323331322331313232233132322132322233231323133313232213112   >>