| Nominative | substytut |
| Genitive | substytutu; substytuta |
| Dative | substytutowi |
| Accusative | substytut; substytuta |
| Instrumental | substytutem |
| Locative | substytucie |
| Vocative | substytucie |
| Nominative | substytuty; substytuci |
| Genitive | substytutów |
| Dative | substytutom |
| Accusative | substytuty; substytutów |
| Instrumental | substytutami |
| Locative | substytutach |
| Vocative | substytuty; substytuci |