Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | Petreus |
| Gen. | Petrei |
| Dat. | Petreo |
| Acc. | Petreum |
| Abl. | Petreo |
| Voc. | Petree |
| PLURIEL |
| Nom. | Petrei |
| Gen. | Petreōrum |
| Dat. | Petreis |
| Acc. | Petreos |
| Abl. | Petreis |
| Voc. | Petrei |
| SINGULIER |
| Nom. | Petreă |
| Gen. | Petreae |
| Dat. | Petreae |
| Acc. | Petream |
| Abl. | Petreā |
| Voc. | Petreă |
| PLURIEL |
| Nom. | Petreae |
| Gen. | Petreārum |
| Dat. | Petreis |
| Acc. | Petreas |
| Abl. | Petreis |
| Voc. | Petreae |
| SINGULIER |
| Nom. | Petreum |
| Gen. | Petrei |
| Dat. | Petreo |
| Acc. | Petreum |
| Abl. | Petreo |
| Voc. | Petreum |
| PLURIEL |
| Nom. | Petrea |
| Gen. | Petreōrum |
| Dat. | Petreis |
| Acc. | Petrea |
| Abl. | Petreis | |