D1212132333132233131113231313231333131323223313232313231323331323131231   >>    D121213233313223313111323131323133313132322331323231323132333132313123   <<    D1212132333132233131113231313231333131323223313232313231323331323131233   >>      D1212132333132233131113231313231333131323223313232313231323331323131232   >>