Deklinationen
| Singular | Plural | |
|---|---|---|
| Nominativ | singular sg penum | plural pl pena |
| Genitiv | singular sg penī | plural pl penōrum |
| Dativ | singular sg penō | plural pl penīs |
| Akkusativ | singular sg penum | plural pl pena |
| Ablativ | singular sg penō | plural pl penīs |
| Vokativ | singular sg penum | plural pl pena |
