| Relaissystem | Nominativ, Singular | nominative case, singular | |
| Relaissystem(e)s | Genitiv, Singular | genitive case, singular | |
| Relaissystem(e) | Dativ, Singular | dative case, singular | |
| Relaissystem | Akkusativ, Singular | accusative case, singular | |
| Relaissysteme | Nominativ, Plural | nominative case, plural | |
| Relaissysteme | Genitiv, Plural | genitive case, plural | |
| Relaissystemen | Dativ, Plural | dative case, plural | |
| Relaissysteme | Akkusativ, Plural | accusative case, plural |