| Singular | Plural | |
|---|---|---|
| Nominativ | commensus, commensusque | commensuus, commensus, commensusque |
| Genitiv | commensus, commensusque | commensuum, commensum |
| Dativ | commensui, commensu | comensibus, commensibus, commensubus |
| Akkusativ | commensum | commensuus, commensus, commensusque |
| Ablativ | commensu | commensubus, comensibus, commensibus |
| Vokativ | commensus, commensusque | commensuus, commensus, commensusque |