| Singular | Plural | |
|---|---|---|
| Nominativ | concursus, cocursus, concursusque | concursusque, concursuus, concursus, cocursus |
| Genitiv | concursus, cocursus, concursusque | concursuum |
| Dativ | concursui | concursubus, concursibus |
| Akkusativ | concursumque, concursum | concursusque, concursuus, concursus, cocursus |
| Ablativ | concursu, concursuque | concursibus, concursubus |
| Vokativ | concursus, cocursus, concursusque | concursusque, concursuus, concursus, cocursus |