D1212132333132233131323222313231323133313231322331313233313231323311231   >>    D121213233313223313132322231323132313331323132233131323331323132331123   <<    D1212132333132233131323222313231323133313231322331313233313231323311233   >>      D1212132333132233131323222313231323133313231322331313233313231323311232   >>