| for many years | 3 | temporal |
| in certain cases | 2 | temporal |
| symptom → be → lifelong | 10 |
| symptom → last → lifetime | 7 |
| symptom → last → entire lifetime | 3 |
| negative | neutral | positive |
| 0.567 | 0.400 | 0.033 |
| Raw frequency | 20 |
| Normalized frequency | 0.256 |
| Modifier score | 0.500 |
| Perplexity | 88.932 |