| very | 23 | degree |
| to the system’s safe operation | 10 | purpose |
| without question | 9 | other |
| driver → be → important | 67 |
| driver → be → essential | 32 |
| driver → be → vital | 12 |
| driver → be → crucial | 11 |
| negative | neutral | positive |
| 0.122 | 0.554 | 0.324 |
| Raw frequency | 122 |
| Normalized frequency | 0.583 |
| Modifier score | 0.889 |
| Perplexity | 41.436 |