D1212132333132233131323222313231323133313231322331323223313123121121   >>    D121213233313223313132322231323132313331323132233132322331312312112   <<    D1212132333132233131323222313231323133313231322331323223313123121123   >>      D1212132333132233131323222313231323133313231322331323223313123121122   >>