East Germany

Mid Germany

• Bielefeld (1)
• Braunschweig (1)

Northeast Germany

• Berlin center (7)
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Northern Germany

• Hamburg (1)

Rhein-Main Area

• Siegen (1)

Ruhr Area

Saarland

• Heidelberg (1)

South East Germany

South Germany

• Friedrichshafen (1)

South West Germany

• Stuttgart (1)