| Sg. Indef. | fat |
| Sg. Def. | fatið |
| Pl. Indef. | føt |
| Pl. Def. | føtini |
| Sg. Indef. | fats |
| Sg. Def. | fatsins |
| Pl. Indef. | fata |
| Pl. Def. | fatanna |
| Sg. Indef. | fati |
| Sg. Def. | fatinum |
| Pl. Indef. | føtum |
| Pl. Def. | føtunum |
| Sg. Indef. | fat |
| Sg. Def. | fatið |
| Pl. Indef. | føt |
| Pl. Def. | føtini |