| Fehlerroutine | Nominativ, Singular | nominative case, singular | |
| Fehlerroutine | Genitiv, Singular | genitive case, singular | |
| Fehlerroutine | Dativ, Singular | dative case, singular | |
| Fehlerroutine | Akkusativ, Singular | accusative case, singular | |
| Fehlerroutinen | Nominativ, Plural | nominative case, plural | |
| Fehlerroutinen | Genitiv, Plural | genitive case, plural | |
| Fehlerroutinen | Dativ, Plural | dative case, plural | |
| Fehlerroutinen | Akkusativ, Plural | accusative case, plural |