| Nominative | prapradedo |
| Genitive | prapradeda |
| Dative | prapradedovi |
| Accusative | prapradeda |
| Locative | prapradedovi |
| Instrumental | prapradedom |
| Nominative | prapradedovia |
| Genitive | prapradedov |
| Dative | prapradedom |
| Accusative | prapradedov |
| Locative | prapradedoch |
| Instrumental | prapradedmi |