D1131323223313113313123132313231323132313231322331323231323221121   >>    D113132322331311331312313231323132313231323132233132323132322112   <<    D1131323223313113313123132313231323132313231322331323231323221123   >>      D1131323223313113313123132313231323132313231322331323231323221122   >>