D1212132333132233131323222313231323221323132322331311331323132311311   >>    D121213233313223313132322231323132322132313232233131133132313231131   <<    D1212132333132233131323222313231323221323132322331311331323132311313   >>      D1212132333132233131323222313231323221323132322331311331323132311312   >>