| Sg | Pl | |
| Nom | hella | hellur (rule) |
| Acc | hellu (rule) | hellur (rule) |
| Dat | hellu (rule) | hellum (rule) |
| Gen | hellu (rule) | hellna (rule) |
| Sg | Pl | |
| Nom | hellan (rule) | hellurnar (rule) |
| Acc | helluna (rule) | hellurnar (rule) |
| Dat | hellunni (rule) | hellunum (rule) |
| Gen | hellunnar (rule) | hellnanna (rule) |