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| акустична міна | |||
| knock-knock: 257 phrases in 24 subjects |
| Airports and air traffic control | 1 |
| American usage, not spelling | 4 |
| Astronautics | 1 |
| Australian | 7 |
| Aviation | 6 |
| Chemistry | 1 |
| Construction | 2 |
| Diplomacy | 1 |
| Economy | 9 |
| Engines | 1 |
| Finances | 7 |
| General | 129 |
| Informal | 43 |
| Law | 2 |
| Marketing | 1 |
| Mechanic engineering | 1 |
| Military | 4 |
| Nautical | 2 |
| Oil / petroleum | 1 |
| Oil and gas | 21 |
| Physics | 2 |
| Sports | 4 |
| Technology | 6 |
| Theatre | 1 |