D23312331311331313231323223313232113313113313231322133313231331123121   >>    D2331233131133131323132322331323211331311331323132213331323133112312   <<    D23312331311331313231323223313232113313113313231322133313231331123123   >>      D23312331311331313231323223313232113313113313231322133313231331123122   >>