| to survive | 10 | purpose |
| from humans | 5 | other |
| from their own bodies | 5 | transitive-object |
| bed bug → need → blood | 12 |
| bed bug → draw → blood | 12 |
| bed bug → require → blood | 6 |
| negative | neutral | positive |
| 0.718 | 0.269 | 0.013 |
| Raw frequency | 30 |
| Normalized frequency | 0.305 |
| Modifier score | 0.900 |
| Perplexity | 348.351 |