D2311231323331322331313232233132322132322233231323133313231211111   >>    D231123132333132233131323223313232213232223323132313331323121111   <<    D2311231323331322331313232233132322132322233231323133313231211113   >>      D2311231323331322331313232233132322132322233231323133313231211112   >>