| Nominative | poseroutka |
| Genitive | poseroutky |
| Dative | poseroutkovi |
| Accusative | poseroutku |
| Vocative | poseroutko |
| Locative | poseroutkovi |
| Instrumental | poseroutkou |
| Nominative | poseroutkové |
| Genitive | poseroutků |
| Dative | poseroutkům |
| Accusative | poseroutky |
| Vocative | poseroutkové |
| Locative | poseroutcích |
| Instrumental | poseroutky |