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| système de code | |||
| système de codage | |||
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| système de codage | |||
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Code System : 43 phrases in 13 subjects |
| Automated equipment | 5 | Economics | 1 | International trade | 1 |
| Aviation | 5 | Electronics | 1 | Taxes | 1 |
| Commerce | 1 | Finances | 3 | Telecommunications | 1 |
| Communications | 15 | General | 5 | ||
| Computers | 1 | Information technology | 3 |