| Testzeichen | Nominativ, Singular | nominative case, singular | |
| Testzeichen(e)s | Genitiv, Singular | genitive case, singular | |
| Testzeichen(e) | Dativ, Singular | dative case, singular | |
| Testzeichen | Akkusativ, Singular | accusative case, singular | |
| Testzeichene | Nominativ, Plural | nominative case, plural | |
| Testzeichene | Genitiv, Plural | genitive case, plural | |
| Testzeichenen | Dativ, Plural | dative case, plural | |
| Testzeichene | Akkusativ, Plural | accusative case, plural |