| within the statutory time limits | 9 | temporal |
| to facilitate that meeting | 9 | purpose |
| in order to visit a doctor | 8 | purpose |
| letter → be → necessary | 178 |
| letter → be → prerequisite | 6 |
| letter → be required for → example | 4 |
| negative | neutral | positive |
| 0.122 | 0.778 | 0.101 |
| Raw frequency | 188 |
| Normalized frequency | 0.550 |
| Modifier score | 0.423 |
| Perplexity | 55.647 |