What are all the names of the concentration camps that were liberated?
Treblinka, Bergen-Belsen, Auschwitz, Birkenau, Monowitz, Dachau,
Buchenwald, Warschau, Krakow-Paszow, Soldau, Niederhagen, Dora,
Flossenburg, Grossrosen, Janowska, Kaiserwald, Mauthausen,
Neuengamme, Oranienburg, Plaszow, Ravensbruck, Stutthof, Terezin
and Westerbork