| very | 4 | degree |
| traditionally | 2 | degree |
| to be most difficult | 2 | purpose |
| tower → be → expensive | 10 |
| tower → be expensive to → build | 4 |
| tower → be → costly | 4 |
| negative | neutral | positive |
| 0.482 | 0.431 | 0.086 |
| Raw frequency | 18 |
| Normalized frequency | 0.285 |
| Modifier score | 0.700 |
| Perplexity | 195.664 |