| Usher-Whitehouse Concepticon | art-271 |
| 1131 | |
| LWT Code | art-257 | 17.47 |
| LEGO Concepticon | art-270 | 2172 |
| IDS Concepticon | art-272 | 17.47 |
| Deutsch | deu-000 | schwer |
| Deutsch | deu-000 | schwierig |
| English | eng-000 | difficult |
| français | fra-000 | difficile |
| español | spa-000 | difícil |