ertubein
nafnorð hvorugkyn
Beyging
eintalafleirtala
án greinismeð greinián greinismeð greini
nf.ertubeinertubeiniðnf.ertubeinertubeinin
þf.ertubeinertubeiniðþf.ertubeinertubeinin
þgf.ertubeiniertubeininuþgf.ertubeinumertubeinunum
ef.ertubeinsertubeinsinsef.ertubeinaertubeinanna