| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | df 21 | Eastern countries | In Eastern countries, 'df 21' may refer to a specific cultural or historical concept, but it depends on the actual context or meaning intended. | 1 |
| 2 | df 21 | Eastern countries | In Eastern countries, 'df 21' may refer to a specific military weapon or technology, which is a significant part of military discussions and development. | 1 |
| 3 | df 21 | Eastern countries | Used as a military standard for digital communication and data exchange | 1 |