Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | Peneius |
| Gen. | Peneii |
| Dat. | Peneio |
| Acc. | Peneium |
| Abl. | Peneio |
| Voc. | Peneie |
| PLURIEL |
| Nom. | Peneii |
| Gen. | Peneiōrum |
| Dat. | Peneiis |
| Acc. | Peneios |
| Abl. | Peneiis |
| Voc. | Peneii |
| SINGULIER |
| Nom. | Peneiă |
| Gen. | Peneiae |
| Dat. | Peneiae |
| Acc. | Peneiam |
| Abl. | Peneiā |
| Voc. | Peneiă |
| PLURIEL |
| Nom. | Peneiae |
| Gen. | Peneiārum |
| Dat. | Peneiis |
| Acc. | Peneias |
| Abl. | Peneiis |
| Voc. | Peneiae |
| SINGULIER |
| Nom. | Peneium |
| Gen. | Peneii |
| Dat. | Peneio |
| Acc. | Peneium |
| Abl. | Peneio |
| Voc. | Peneium |
| PLURIEL |
| Nom. | Peneia |
| Gen. | Peneiōrum |
| Dat. | Peneiis |
| Acc. | Peneia |
| Abl. | Peneiis | |