| Sg. Indef. | flass |
| Sg. Def. | flassið |
| Pl. Indef. | flöss |
| Pl. Def. | flössin |
| Sg. Indef. | flass |
| Sg. Def. | flassins |
| Pl. Indef. | flassa |
| Pl. Def. | flassanna |
| Sg. Indef. | flassi |
| Sg. Def. | flassinu |
| Pl. Indef. | flössum |
| Pl. Def. | flössunum |
| Sg. Indef. | flass |
| Sg. Def. | flassið |
| Pl. Indef. | flöss |
| Pl. Def. | flössin |