theirs   
azy
Him, her, it, them; his, hers, its, theirs. Accusative and possessive case of izy. [Richardson 1885]
him, her, it, them (as object); his, hers, its, theirs [Hallanger 1973]
azy ireo
them; theirs. [Richardson 1885]
them (as object); theirs [Hallanger 1973]
-ny
His, hers, its, theirs, that, which; by him, her, them, or it. [Richardson 1885]