Several Arbeitsgemeinschaft (work group) partnerships were formed for specific programmes: Arge 91 (Dornier, Heinkel, Messerschmitt) built Fiat G91R/3; Arge Nord, or Arge 104 Nord (Hamburger, Weser, Focke-Wulf, Fokker and Aviolanda) built F-104G; Arge Süd, or Arge 104 Süd (Messerschmitt, Heinkel, Dornier, Siebel) also built F-104G; Arge Transall (Blume, Hamburger, VFW (ex-Weser) and Nord-Aviation of France) built Transall C-160.