D1212132333132233131323222313231323133313231322331313232211211311   >>    D121213233313223313132322231323132313331323132233131323221121131   <<    D1212132333132233131323222313231323133313231322331313232211211313   >>      D1212132333132233131323222313231323133313231322331313232211211312   >>