D1212132333132233131323222313231323132313331322331323131323133313233311   >>    D121213233313223313132322231323132313231333132233132313132313331323331   <<    D1212132333132233131323222313231323132313331322331323131323133313233313   >>      D1212132333132233131323222313231323132313331322331323131323133313233312   >>