| Singular | Plural | |
|---|---|---|
| Nominativ | congerra, concerras, concerra, congerras | congerrae, concerrae |
| Genitiv | concerrai, congerrae, congerrai, concerrae | concerrarum, congerrum, concerrum, congerrarum |
| Dativ | concerrai, congerrae, congerrai, concerrae | congerris, congerrabus, concerris, concerrabus |
| Akkusativ | concerram, congerram | congerras, concerras |
| Ablativ | congerra, congerrad, concerra, concerrad | congerris, congerrabus, concerris, concerrabus |
| Vokativ | congerra, concerra | congerrae, concerrae |