D1212132333132233131323222313231323133313231322331323123231323132311331   >>    D121213233313223313132322231323132313331323132233132312323132313231133   <<    D1212132333132233131323222313231323133313231322331323123231323132311333   >>      D1212132333132233131323222313231323133313231322331323123231323132311332   >>