D2311231323331322331313232233132333132313231211113313231323233311   >>    D231123132333132233131323223313233313231323121111331323132323331   <<    D2311231323331322331313232233132333132313231211113313231323233313   >>      D2311231323331322331313232233132333132313231211113313231323233312   >>