| Plattdüütsch-Neddersassisch | nds-002 |
| Moderspraak | |
| Deutsch | deu-000 | Muttersprache |
| eesti | ekk-000 | emakeel |
| English | eng-000 | mother tongue |
| English | eng-000 | native language |
| suomi | fin-000 | äidinkieli |
| français | fra-000 | langue maternelle |
| magyar | hun-000 | anyanyelv |
| italiano | ita-000 | lingua madre |
| italiano | ita-000 | lingua materna |
| Kurmancî | kmr-000 | zimanê dayik |
| Kurmancî | kmr-000 | zimanê zikmakî |
| latine | lat-000 | lingua materna |
| latine | lat-000 | sermo patrius |
| Nederlands | nld-000 | moedertaal |
| polski | pol-000 | język ojczysty |
| russkij | rus-001 | rodnój jasýk |
| español | spa-000 | lengua materna |
| svenska | swe-000 | modersmål |
| Türkçe | tur-000 | anadili |
| yidish | ydd-001 | mame-loshen |