https://docs.google.com/forms/d/e/1FAIpQLSftY_-r5SxzdWGalo8PhVjjQZOjFqvlC_IPW-1fec4r2i4U2w/viewform?vc=0&c=0&w=1&flr=0
https://www.english-4u.de/en/grammar/plural.htm
