D1212132333132233131323222313231323133313231322331323211232313231311311   >>    D121213233313223313132322231323132313331323132233132321123231323131131   <<    D1212132333132233131323222313231323133313231322331323211232313231311313   >>      D1212132333132233131323222313231323133313231322331323211232313231311312   >>