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| трёхзнаковый | |||
| трёхбуквенный (oleg.vigodsky) | |||
| three -letter: 30 phrases in 17 subjects |
| Art | 1 |
| Aviation | 1 |
| Chemistry | 1 |
| Electronics | 8 |
| Energy industry | 1 |
| General | 1 |
| Genetics | 1 |
| Ironical | 1 |
| Medical | 1 |
| Nautical | 1 |
| Navigation | 1 |
| Polygraphy | 2 |
| Programming | 2 |
| Slang | 2 |
| Technology | 2 |
| Telecommunications | 2 |
| Vulgar | 2 |