D1212132333132233131113231313231333131323223313232313231323123221   >>    D121213233313223313111323131323133313132322331323231323132312322   <<    D1212132333132233131113231313231333131323223313232313231323123223   >>      D1212132333132233131113231313231333131323223313232313231323123222   >>