| often | 16 | temporal |
| chemically | 6 | manner |
| so heavily | 6 | manner |
| stone → be → treated | 192 |
| stone → require → treatment | 13 |
| stone → be treated by → various techniques | 7 |
| negative | neutral | positive |
| 0.183 | 0.699 | 0.118 |
| Raw frequency | 212 |
| Normalized frequency | 0.695 |
| Modifier score | 0.652 |
| Perplexity | 252.159 |