| Singular | Plural | |
|---|---|---|
| Nominativ | oblongum, oblonga, oblongus | oblongi, oblonga, oblongae |
| Genitiv | oblongae, oblongi, oblongi | oblongorum, oblongorum, oblongarum |
| Dativ | oblongo, oblongo, oblongae | oblongis |
| Akkusativ | oblongam, oblongum, oblongum | oblonga, oblongos, oblongas |
| Ablativ | oblonga, oblongo, oblongo | oblongis |
| Vokativ | oblonga, oblonge, oblongum | oblongi, oblonga, oblongae |
| Singular | Plural | |
|---|---|---|
| Nominativ | oblongius | oblongiores |
| Genitiv | — | — |
| Dativ | — | — |
| Akkusativ | oblongius | oblongiores |
| Ablativ | — | — |
| Vokativ | oblongius | oblongiores |
| Singular | Plural | |
|---|---|---|
| Nominativ | — | — |
| Genitiv | — | — |
| Dativ | — | — |
| Akkusativ | — | — |
| Ablativ | — | — |
| Vokativ | — | — |
| Grundform | |
|---|---|
| Positiv | oblonge |
| Komparativ | — |
| Superlativ | — |