| more efficiently | 30 | manner |
| to generate mechanical force | 12 | purpose |
| to operate | 12 | purpose |
| engine → burn → fuel | 115 |
| engine → burn → the fuel | 25 |
| engine → burn → its fuel | 5 |
| negative | neutral | positive |
| 0.292 | 0.507 | 0.201 |
| Raw frequency | 145 |
| Normalized frequency | 0.627 |
| Modifier score | 1.000 |
| Perplexity | 280.072 |