| Singular | Plural | |
|---|---|---|
| Nominativ | concurrentia | concurrentiae |
| Genitiv | concurrentiae, concurrentiai | concurrentiarum |
| Dativ | concurrentiai, concurrentiae | concurrentiis, concurrentiabus |
| Akkusativ | concurrentiam | concurrentias |
| Ablativ | concurrentia, concurrentiad | concurrentiis, concurrentiabus |
| Vokativ | concurrentia | concurrentiae |