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