| English | eng-000 |
| NP-hard | |
| Deutsch | deu-000 | NP-Schwere |
| English | eng-000 | NP-complete |
| Esperanto | epo-000 | NP-kompleta |
| français | fra-000 | NP-dur |
| עברית | heb-000 | NP-קשה |
| 日本語 | jpn-000 | NP困難 |
| 한국어 | kor-000 | NP-난해 |
| Nederlands | nld-000 | NP-moeilijk |
| polski | pol-000 | Problem NP-trudny |
| русский | rus-000 | NP-трудный |
| español | spa-000 | NP-hard |
| српски | srp-000 | НП-тешки проблеми |