| Festcode | Nominativ, Singular | nominative case, singular | |
| Festcod(e)es | Genitiv, Singular | genitive case, singular | |
| Festcod(e)e | Dativ, Singular | dative case, singular | |
| Festcode | Akkusativ, Singular | accusative case, singular | |
| Festcodee | Nominativ, Plural | nominative case, plural | |
| Festcodee | Genitiv, Plural | genitive case, plural | |
| Festcodeen | Dativ, Plural | dative case, plural | |
| Festcodee | Akkusativ, Plural | accusative case, plural |