| easily | 2 | manner |
| in its pure form | 2 | other |
| further | 2 | manner |
| heroin → be made from → morphine | 38 |
| heroin → be made by → refining morphine | 4 |
| negative | neutral | positive |
| 0.743 | 0.245 | 0.012 |
| Raw frequency | 42 |
| Normalized frequency | 0.558 |
| Modifier score | 1.000 |
| Perplexity | 31.515 |