helmingsborgunnafnorð kvenkynFallbeygingarEt.eintalaFt.fleirtalaEintalaEintala m. greinieintala með greiniNf.nefnifallhelmingsborgunhelmingsborguninÞf.þolfallhelmingsborgunhelmingsborguninaÞgf.þágufallhelmingsborgunhelmingsborguninniEf.eignarfallhelmingsborgunarhelmingsborgunarinnar