D2311231323331322331313232233132313231323221133132333132313331323123121   >>    D231123132333132233131323223313231323132322113313233313231333132312312   <<    D2311231323331322331313232233132313231323221133132333132313331323123123   >>      D2311231323331322331313232233132313231323221133132333132313331323123122   >>