D2311233132233131323132322331312121323132313123231323132313232213231   >>    D231123313223313132313232233131212132313231312323132313231323221323   <<    D2311233132233131323132322331312121323132313123231323132313232213233   >>      D2311233132233131323132322331312121323132313123231323132313232213232   >>