| Sg. indefinite | forhammer |
| Sg. definite | forhammeren |
| Pl. indefinite | forhammere; forhamre |
| Pl. definite | forhammerne; forhamrene |
| Sg. indefinite | forhammers |
| Sg. definite | forhammerens |
| Pl. indefinite | forhammeres; forhamres |
| Pl. definite | forhammernes; forhamrenes |