| Sg | Pl | |
| Nom | vika | vikur (rule) |
| Acc | viku (rule) | vikur (rule) |
| Dat | viku (rule) | vikum (rule) |
| Gen | viku (rule) | vikna (rule) |
| Sg | Pl | |
| Nom | vikan (rule) | vikurnar (rule) |
| Acc | vikuna (rule) | vikurnar (rule) |
| Dat | vikunni (rule) | vikunum (rule) |
| Gen | vikunnar (rule) | viknanna (rule) |