| very | 59 | degree |
| slightly | 22 | degree |
| often | 15 | degree |
| surface → be → rough | 596 |
| surface → be made → rough | 4 |
| surface → be considered → rough | 3 |
| negative | neutral | positive |
| 0.260 | 0.608 | 0.132 |
| Raw frequency | 603 |
| Normalized frequency | 0.785 |
| Modifier score | 0.776 |
| Perplexity | 135.070 |