D2311231323331322331313232233132333132312111133132313231333132331121   >>    D231123132333132233131323223313233313231211113313231323133313233112   <<    D2311231323331322331313232233132333132312111133132313231333132331123   >>      D2311231323331322331313232233132333132312111133132313231333132331122   >>