| Singular | Plural | |
|---|---|---|
| Nominativ | institutia, institutom, institutum, institutumque | instituta, institutaque |
| Genitiv | instituti | institutorum, institutorumque |
| Dativ | instituto, institutoque | institutis, institutisque, istitutis |
| Akkusativ | institutum, institutumque | instituta, institutaque |
| Ablativ | instituto, institutia, institutoque | institutis, institutisque, istitutis |
| Vokativ | institutia, institutum, institutumque | instituta, institutaque |