| Singular | Plural | |
|---|---|---|
| Nominativ | congrua, congrua | congruae, congruae |
| Genitiv | congruae, congruae, congruai, congruai | congruum, congruum, congruarum, congruarum |
| Dativ | congruae, congruae, congruai, congruai | congruis, congruabus, congruabus, congruis |
| Akkusativ | congruam, congruam | congruas, congruas |
| Ablativ | congrua, congruad, congruad, congrua | congruis, congruis, congruabus, congruabus |
| Vokativ | congrua, congrua | congruae, congruae |