D2311231323331322331313232233132313231323221133132333132322123111   >>    D231123132333132233131323223313231323132322113313233313232212311   <<    D2311231323331322331313232233132313231323221133132333132322123113   >>      D2311231323331322331313232233132313231323221133132333132322123112   >>