A few formations appear with the suffix -stwo which is used to form abstract nouns from other nouns, as in czempionstwo 'championship' /E. champion/, chuliganstwo /E. hooligan/, globtroterstwo /E. globtrotter/ , kidnaperstwo /E. kidnapper/, ...
Broder Carstensen, Wolfgang Viereck, Wolf-Dietrich Bald, 1986