| euskara | eus-000 |
| irregular | |
| Cymraeg | cym-000 | afreolaidd |
| English | eng-000 | erratic |
| English | eng-000 | irregular |
| English | eng-000 | spasmodic |
| English | eng-000 | uneven |
| Esperanto | epo-000 | malregula |
| français | fra-000 | irrégulier |
| galego | glg-000 | irregular |
| italiano | ita-000 | irregolare |
| bokmål | nob-000 | uregelmessig |
| bokmål | nob-000 | ureglementert |
| occitan | oci-000 | irregular |
| português | por-000 | irregular |
| română | ron-000 | iregular |
| español | spa-000 | irregular |