D1212132333132233131323222313231323133313231322331323131133131232211   >>    D121213233313223313132322231323132313331323132233132313113313123221   <<    D1212132333132233131323222313231323133313231322331323131133131232213   >>      D1212132333132233131323222313231323133313231322331323131133131232212   >>