| Nominative | potaš |
| Genitive | potaše |
| Dative | potaši |
| Accusative | potaš |
| Vocative | potaši |
| Locative | potaši |
| Instrumental | potaší; potašem |
| Nominative | potaše |
| Genitive | potaší; potašů |
| Dative | potaším; potašům |
| Accusative | potaše |
| Vocative | potaše |
| Locative | potaších |
| Instrumental | potašemi; potaši |