| SgM | SgF | SgN | PlM | PlF | PlN | |
| Nom | sterkr | sterk (rule) | sterkt (rule) | sterkir (rule) | sterkar (rule) | sterk (rule) |
| Acc | sterkan (rule) | sterka (rule) | sterkt (rule) | sterka (rule) | sterkar (rule) | sterk (rule) |
| Dat | sterkum (rule) | sterkri (rule) | sterku (rule) | sterkum (rule) | sterkum (rule) | sterkum (rule) |
| Gen | sterks (rule) | sterkrar (rule) | sterks (rule) | sterkra (rule) | sterkra (rule) | sterkra (rule) |
| SgM | SgF | SgN | Pl | |
| Nom | sterki (rule) | sterka (rule) | sterka (rule) | sterku (rule) |
| Acc | sterka (rule) | sterku (rule) | sterka (rule) | sterku (rule) |
| Dat | sterka (rule) | sterku (rule) | sterka (rule) | sterkum (rule) |
| Gen | sterka (rule) | sterku (rule) | sterka (rule) | sterku (rule) |
| Degree | |
| Comp | sterkari (rule) |
| Sup | sterkastr (rule) |