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tapping : 271 phrases in 32 subjects |
| Agriculture | 7 |
| Automated equipment | 2 |
| Basketball | 1 |
| Chemistry | 9 |
| Communications | 4 |
| Computers | 2 |
| Construction | 2 |
| Criminal law | 1 |
| Earth sciences | 1 |
| Economics | 1 |
| Electric traction | 2 |
| Electrical engineering | 3 |
| Electronics | 21 |
| Environment | 2 |
| Forestry | 1 |
| General | 10 |
| Hydrology | 1 |
| Industry | 7 |
| Law | 2 |
| Mechanic engineering | 25 |
| Medical | 3 |
| Medical appliances | 1 |
| Metallurgy | 36 |
| Microsoft | 9 |
| Municipal planning | 3 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 101 |
| Telecommunications | 1 |
| Thermal Energy | 3 |
| Transformers | 4 |
| Transport | 4 |
| Water resources | 1 |