 |
| time variation: 35 phrases in 18 subjects |
| Astronomy | 4 |
| Cement | 1 |
| Chess | 2 |
| Construction | 1 |
| Economy | 1 |
| Electronics | 3 |
| General | 1 |
| High energy physics | 1 |
| Household appliances | 1 |
| Hydrology | 2 |
| Makarov | 1 |
| Mathematics | 1 |
| Mechanics | 1 |
| Metrology | 2 |
| Military | 3 |
| Navigation | 2 |
| Programming | 3 |
| Technology | 5 |