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