| very | 10 | degree |
| to obtain accuracy | 8 | purpose |
| always | 4 | degree |
| tree → be → difficult | 38 |
| tree → be → challenge | 9 |
| tree → be → tricky | 5 |
| tree → be → challenging | 3 |
| negative | neutral | positive |
| 0.424 | 0.451 | 0.125 |
| Raw frequency | 55 |
| Normalized frequency | 0.392 |
| Modifier score | 0.833 |
| Perplexity | 331.038 |