| Sg | Pl | |
| Nom | þing | þing (rule) |
| Acc | þing (rule) | þing (rule) |
| Dat | þingi (rule) | þingum (rule) |
| Gen | þings (rule) | þinga (rule) |
| Sg | Pl | |
| Nom | þingit (rule) | þingin (rule) |
| Acc | þingit (rule) | þingin (rule) |
| Dat | þinginu (rule) | þingunum (rule) |
| Gen | þingsins (rule) | þinganna (rule) |