| very | 7 | degree |
| often | 4 | degree |
| to grasp in the beginning | 4 | temporal |
| principle → be → difficult | 16 |
| principle → be → hard | 10 |
| principle → be → tough | 3 |
| negative | neutral | positive |
| 0.369 | 0.462 | 0.168 |
| Raw frequency | 29 |
| Normalized frequency | 0.387 |
| Modifier score | 0.675 |
| Perplexity | 267.702 |