| Loopback | Nominativ, Singular | nominative case, singular | |
| Loopback(e)s | Genitiv, Singular | genitive case, singular | |
| Loopbacken | Dativ, Singular | dative case, singular | |
| Loopbacke | Akkusativ, Singular | accusative case, singular | |
| Loopbacken | Nominativ, Plural | nominative case, plural |