D13231123313133313131323132323213231313231323223313133313223321   >>    D1323112331313331313132313232321323131323132322331313331322332   <<    D13231123313133313131323132323213231313231323223313133313223323   >>      D13231123313133313131323132323213231313231323223313133313223322   >>