| Nominativ | serpentigenas, serpentigena, serpentigenas, serpentigena | serpentigenae, serpentigenae |
| Genitiv | serpentigenai, serpentigenae, serpentigenai, serpentigenae | serpentigenum, serpentigenarum, serpentigenarum, serpentigenum |
| Dativ | serpentigenae, serpentigenai, serpentigenae, serpentigenai | serpentigenabus, serpentigenis, serpentigenabus, serpentigenis |
| Akkusativ | serpentigenam, serpentigenam | serpentigenas, serpentigenas |
| Ablativ | serpentigenad, serpentigena, serpentigenad, serpentigena | serpentigenis, serpentigenabus, serpentigenis, serpentigenabus |
| Vokativ | serpentigena, serpentigena | serpentigenae, serpentigenae |
