| Sg. Indef. | brún |
| Sg. Def. | brúnin |
| Pl. Indef. | brýr |
| Pl. Def. | brýrnar |
| Sg. Indef. | brúnar |
| Sg. Def. | brúnarinnar |
| Pl. Indef. | brúna |
| Pl. Def. | brúnanna |
| Sg. Indef. | brún |
| Sg. Def. | brúnni |
| Pl. Indef. | brúm |
| Pl. Def. | brúnum |
| Sg. Indef. | brún |
| Sg. Def. | brúnna |
| Pl. Indef. | brýr |
| Pl. Def. | brýrnar |