| Regression | Nominativ, Singular | nominative case, singular | |
| Regressione | Genitiv, Singular | genitive case, singular | |
| Regressionen | Dativ, Singular | dative case, singular | |
| Regression(e)s | Akkusativ, Singular | accusative case, singular | |
| Regressioner | Nominativ, Plural | nominative case, plural | |
| Regressionern | Genitiv, Plural | genitive case, plural | |
| Regressionn | Dativ, Plural | dative case, plural |