| very | 55 | degree |
| to be substituted with the competence | 9 | purpose |
| in the past | 8 | temporal |
| product → be → difficult | 251 |
| product → be difficult to → work | 9 |
| product → be difficult to → produce | 9 |
| product → prove → difficult | 3 |
| negative | neutral | positive |
| 0.494 | 0.356 | 0.150 |
| Raw frequency | 272 |
| Normalized frequency | 0.490 |
| Modifier score | 0.589 |
| Perplexity | 188.029 |