Deklinationen
| Singular | Plural | |
|---|---|---|
| Nominativ | singular sg ducatus | plural pl ducatus |
| Genitiv | singular sg ducatus | plural pl ducatuum |
| Dativ | singular sg ducatui | plural pl ducatibus |
| Akkusativ | singular sg ducatum | plural pl ducatus |
| Ablativ | singular sg ducatu | plural pl ducatibus |
| Vokativ | singular sg ducatus | plural pl ducatus |
