| Sg | Pl | |
| Nom | elgr | elgir (rule) |
| Acc | elg (rule) | elgi (rule) |
| Dat | elg (rule) | elgjum (rule) |
| Gen | elgs (rule) | elgja (rule) |
| Sg | Pl | |
| Nom | elgrinn (rule) | elgirnir (rule) |
| Acc | elginn (rule) | elgina (rule) |
| Dat | elginum (rule) | elgjunum (rule) |
| Gen | elgsins (rule) | elgjanna (rule) |