Input (grade 10): In 1981 he was elected vice president of the Bundestag (1979-1981) and then Governing Mayor (Regierender Bürgermeister) of West Berlin (1981-1984).
Output (grade 11): He was elected vice president of the Bundestag 1979-1981, but did not stand for re-election, because he became the Governing Mayor () of West Berlin (1981-1984).