Schwerin , (iv) Potsdam , (v) Frankfurt (Oder) , (vi) Magdeburg , (vii) Cottbus , (viii) Halle , (ix) Leipzig , (x) Erfurt , (xi) Dresden , (xii) Karl-Marx-Stadt (Chemnitz until 1953 and again in 1990), (xiii) Gera , and (xiv) Suhl ; East Berlin was denominated a Bezirk (district) in