| Sg M | Sg F | Sg N | Pl | |
| Nom | ? (rule) | fest (rule) | ? (rule) | |
| Acc | festene (rule) | feste (rule) | fest (rule) | ? (rule) |
| Gen | festes (rule) | festere (rule) | festes (rule) | ? (rule) |
| Dat | feste (rule) | festere (rule) | feste (rule) | ? (rule) |
| Sg M | Sg F | Sg N | Pl | |
| Nom | ? (rule) | ? (rule) | ? (rule) | ? (rule) |
| Acc | ? (rule) | ? (rule) | ? (rule) | ? (rule) |
| Gen | ? (rule) | ? (rule) | ? (rule) | ? (rule) |
| Dat | ? (rule) | ? (rule) | ? (rule) | ? (rule) |