| very | 26 | degree |
| generally | 6 | degree |
| given have “little | 6 | other |
| model → be → difficult | 92 |
| model → be → tricky | 13 |
| model → be difficult to → solve | 7 |
| negative | neutral | positive |
| 0.509 | 0.401 | 0.090 |
| Raw frequency | 112 |
| Normalized frequency | 0.511 |
| Modifier score | 0.625 |
| Perplexity | 255.897 |