Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | Theseius |
| Gen. | Theseii |
| Dat. | Theseio |
| Acc. | Theseium |
| Abl. | Theseio |
| Voc. | Theseie |
| PLURIEL |
| Nom. | Theseii |
| Gen. | Theseiōrum |
| Dat. | Theseiis |
| Acc. | Theseios |
| Abl. | Theseiis |
| Voc. | Theseii |
| SINGULIER |
| Nom. | Theseiă |
| Gen. | Theseiae |
| Dat. | Theseiae |
| Acc. | Theseiam |
| Abl. | Theseiā |
| Voc. | Theseiă |
| PLURIEL |
| Nom. | Theseiae |
| Gen. | Theseiārum |
| Dat. | Theseiis |
| Acc. | Theseias |
| Abl. | Theseiis |
| Voc. | Theseiae |
| SINGULIER |
| Nom. | Theseium |
| Gen. | Theseii |
| Dat. | Theseio |
| Acc. | Theseium |
| Abl. | Theseio |
| Voc. | Theseium |
| PLURIEL |
| Nom. | Theseia |
| Gen. | Theseiōrum |
| Dat. | Theseiis |
| Acc. | Theseia |
| Abl. | Theseiis | |