D1212132333132233131323222313231323133313231322331323223313232213111   >>    D121213233313223313132322231323132313331323132233132322331323221311   <<    D1212132333132233131323222313231323133313231322331323223313232213113   >>      D1212132333132233131323222313231323133313231322331323223313232213112   >>