 |
| |||
| column (drill formation) | |||
| line of columns | |||
| линия колонн: 35 phrases in 12 subjects |
| Architecture | 1 |
| Armored vehicles | 1 |
| Artillery | 2 |
| Building structures | 1 |
| Construction | 1 |
| Drilling | 5 |
| Military | 10 |
| Oil / petroleum | 8 |
| Oil and gas | 2 |
| Oil and gas technology | 2 |
| Oilfields | 1 |
| Sakhalin | 1 |