| usually | 4 | degree |
| to morning sickness | 4 | cause |
| together | 3 | manner |
| symptom → be → connected | 13 |
| symptom → be → linked | 13 |
| symptom → be → tied | 3 |
| negative | neutral | positive |
| 0.433 | 0.529 | 0.037 |
| Raw frequency | 29 |
| Normalized frequency | 0.306 |
| Modifier score | 0.760 |
| Perplexity | 118.512 |