Starting in 2010/2011, Hauptschulen were merged with Realschulen and Gesamtschulen to form a new type of comprehensive school in the German States of Berlin and Hamburg, called Stadtteilschule in Hamburg and Sekundarschule in Berlin (see: Education in Berlin, Education in Hamburg).

Answer this question, if possible (if impossible, reply "unanswerable"): What was the combination of Hauptschulen with Realschulen and Gesamtschulen called in Berlinberg?
unanswerable