| during the acylation step | 10 | temporal |
| incrementally | 4 | degree |
| alternatively | 3 | manner |
| catalyst → be → added | 70 |
| catalyst → be → introduced | 11 |
| catalyst → be added at → this stage | 3 |
| negative | neutral | positive |
| 0.112 | 0.798 | 0.090 |
| Raw frequency | 84 |
| Normalized frequency | 0.779 |
| Modifier score | 0.650 |
| Perplexity | 479.072 |