D2311231323331322331313232233132322132322233231323133313231232311   >>    D231123132333132233131323223313232213232223323132313331323123231   <<    D2311231323331322331313232233132322132322233231323133313231232313   >>      D2311231323331322331313232233132322132322233231323133313231232312   >>