| unfortunately | 10 | manner |
| prior to world war ii | 9 | temporal |
| in cities | 8 | location |
| bed bug → be → prevalent | 23 |
| bed bug → be → common problem | 19 |
| bed bug → be → most prevalent | 7 |
| bed bug → be → common issue | 3 |
| bed bug → be → prevalent problem | 3 |
| negative | neutral | positive |
| 0.724 | 0.252 | 0.025 |
| Raw frequency | 55 |
| Normalized frequency | 0.385 |
| Modifier score | 0.900 |
| Perplexity | 268.072 |