| very | 10 | degree |
| to portage for rafts | 2 | purpose |
| for veteran rafters | 2 | transitive-object |
| rapid → be → difficult | 11 |
| rapid → be → challenging | 9 |
| rapid → be → tricky | 5 |
| negative | neutral | positive |
| 0.396 | 0.387 | 0.217 |
| Raw frequency | 25 |
| Normalized frequency | 0.819 |
| Modifier score | 1.000 |
| Perplexity | 258.785 |