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| unlösbar, untrennbar, fest (Sebas) | |||
| todsicher (Andrey Truhachev) | |||
| намертво: 34 phrases in 12 subjects |
| Chemistry | 4 |
| Construction | 1 |
| Food industry | 4 |
| Foundry | 1 |
| General | 3 |
| Geology | 2 |
| Metallurgy | 4 |
| Metalworking | 5 |
| Mineralogy | 1 |
| Silicate industry | 6 |
| Technology | 1 |
| Textile industry | 2 |