D1212121221323132313233313131323132313231322331333223313232111131   >>    D121212122132313231323331313132313231323132233133322331323211113   <<    D1212121221323132313233313131323132313231322331333223313232111133   >>      D1212121221323132313233313131323132313231322331333223313232111132   >>