| brezhoneg | bre-000 |
| staj | |
| беларуская | bel-000 | практыка |
| беларуская | bel-000 | стажыроўка |
| Deutsch | deu-000 | Lehre |
| Esperanto | epo-000 | lernoservo |
| français | fra-000 | apprentissage en entreprise |
| français | fra-000 | stage |
| français | fra-000 | stage d’apprentissage |
| magyar | hun-000 | inaskodás |
| Nederlands | nld-000 | leer |
| русский | rus-000 | практика |
| русский | rus-000 | стажировка |