| very | 7 | degree |
| to damage | 6 | purpose |
| to the effects of fatigue | 4 | cause |
| spine → be → fragile | 15 |
| spine → be → vulnerable | 14 |
| spine → become → vulnerable | 3 |
| negative | neutral | positive |
| 0.706 | 0.256 | 0.039 |
| Raw frequency | 32 |
| Normalized frequency | 0.486 |
| Modifier score | 0.500 |
| Perplexity | 308.027 |