| because of a virus | 7 | cause |
| for any reason | 6 | cause |
| immediately | 5 | manner |
| signature → be → invalid | 131 |
| signature → be → invalidated | 27 |
| signature → become → invalid | 26 |
| signature → be considered → invalid | 12 |
| signature → be declared → invalid | 10 |
| signature → be deemed → invalid | 5 |
| negative | neutral | positive |
| 0.545 | 0.434 | 0.021 |
| Raw frequency | 211 |
| Normalized frequency | 0.794 |
| Modifier score | 0.827 |
| Perplexity | 204.954 |