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abertura : 108 phrases in 19 subjects |
| Agriculture | 2 |
| Communications | 10 |
| Construction | 3 |
| Earth sciences | 2 |
| Electronics | 44 |
| Finances | 1 |
| Fish farming pisciculture | 5 |
| Health care | 2 |
| Hobbies and pastimes | 1 |
| Industry | 9 |
| Information technology | 4 |
| Labor law | 1 |
| Life sciences | 2 |
| Lighting other than cinema | 2 |
| Mechanic engineering | 6 |
| Metallurgy | 4 |
| Natural sciences | 4 |
| Physical sciences | 1 |
| Transport | 5 |