Analysis of information sources in references of the Wikipedia article "Αριθμοί στη γεωργιανή γλώσσα" in Greek language version.
Base '20' can also be used more sporadically in a system that is basically decimal ... French shows such vigesimality only in the range '80'–'99', with '80' expressed as quatre-vingts 'four-twenties', '91' as quatre-vingt-onze 'four-twenty-eleven', etc.