 |
|
initial stage : 29 phrases in 18 subjects |
| Astronautics | 4 |
| Aviation | 1 |
| Cement | 1 |
| Ecology | 1 |
| Economics | 1 |
| Food industry | 1 |
| Gas processing plants | 1 |
| General | 4 |
| Geophysics | 1 |
| Mathematics | 1 |
| Metallurgy | 1 |
| Military | 2 |
| Oil / petroleum | 3 |
| Oil and gas | 1 |
| Politics | 1 |
| Programming | 1 |
| Security systems | 1 |
| Space | 3 |