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| nul, abonneenummer, infonummer | |||
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| begin-nul | |||
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| bellen met assistentie van operator | |||
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0 : 45 phrases in 12 subjects |
| Communications | 13 |
| Construction | 1 |
| Electronics | 10 |
| Environment | 2 |
| Information technology | 2 |
| Law | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 7 |
| Microsoft | 1 |
| Statistics | 2 |
| Technology | 2 |
| Transport | 3 |