Flexeme of opperiri - opperietur - oppertum - opperiturum
http://lila-erc.eu/data/lexicalResources/prinparlat/id/flexeme_o0859_7433 <http://lila-erc.eu/ontologies/prinparlat/Flexeme>
Flexeme of opperiri - opperietur - oppertum - opperiturum