Deutsche Gebärdensprache
Swiss-German Sign Language (German: "Deutschschweizer Gebärdensprache", abbreviated DSGS) is the primary deaf sign language of the German-speaking part of Switzerland and of Liechtenstein. The language was established around 1828. In 2011 it was estimated that 7,500 deaf and 13,000 hearing people use DSGS. There are six dialects which developed in boarding schools for the deaf in Zürich, Bern, Basel, Lucerne, and St. Gallen, as well as in Liechtenstein.