D1212132333132233131113231313231333131323223313232313232233112331   >>    D121213233313223313111323131323133313132322331323231323223311233   <<    D1212132333132233131113231313231333131323223313232313232233112333   >>      D1212132333132233131113231313231333131323223313232313232233112332   >>