D1212132333132233131323222313231323221323132322331311331323331312312131   >>    D121213233313223313132322231323132322132313232233131133132333131231213   <<    D1212132333132233131323222313231323221323132322331311331323331312312133   >>      D1212132333132233131323222313231323221323132322331311331323331312312132   >>