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bubbling : 422 phrases in 64 subjects |
| Accounting | 1 |
| Acoustics | 1 |
| Agriculture | 1 |
| American usage, not spelling | 4 |
| Amphibians and reptiles | 1 |
| Architecture | 1 |
| Armored vehicles | 1 |
| Astronautics | 1 |
| Automobiles | 2 |
| Aviation | 2 |
| Biology | 1 |
| Biotechnology | 1 |
| Chemical industry | 1 |
| Chemistry | 7 |
| Construction | 9 |
| Cytology | 1 |
| Ecology | 6 |
| Electronics | 79 |
| Energy industry | 18 |
| Figurative | 3 |
| Foundry | 2 |
| General | 79 |
| Geology | 9 |
| Household appliances | 1 |
| Hydrography | 2 |
| Hydrology | 2 |
| Idiomatic | 1 |
| Informal | 2 |
| Information technology | 8 |
| Law | 1 |
| Literature | 1 |
| Makarov | 7 |
| Medical | 11 |
| Metallurgy | 3 |
| Microelectronics | 7 |
| Military | 4 |
| Mining | 6 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 7 |
| Non-destructive testing | 3 |
| Oil / petroleum | 21 |
| Oil and gas | 1 |
| Oil and gas technology | 2 |
| Oilfields | 3 |
| Ornithology | 1 |
| Packaging | 1 |
| Pharmacy and pharmacology | 1 |
| Polygraphy | 1 |
| Programming | 6 |
| Proper and figurative | 2 |
| Pulmonology | 2 |
| Radioengineering | 1 |
| Sakhalin | 2 |
| Scuba diving | 1 |
| Seismology | 1 |
| Shipbuilding | 1 |
| Silicate industry | 2 |
| Slang | 2 |
| Soil science | 1 |
| Technology | 63 |
| Thermal engineering | 3 |
| Transport | 1 |
| Water resources | 1 |
| Weapons of mass destruction | 4 |