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cycle engine : 67 phrases in 12 subjects |
| Agriculture | 2 |
| Automobiles | 8 |
| Aviation | 15 |
| Drilling | 2 |
| Electronics | 1 |
| Mechanics | 1 |
| Metallurgy | 1 |
| Nautical | 1 |
| Nuclear physics | 1 |
| Oil / petroleum | 5 |
| Space | 13 |
| Technology | 17 |
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