| downstream of the impeller | 8 | other |
| in front of two befs | 5 | location |
| vertically | 4 | manner |
| diffuser → be → placed | 16 |
| diffuser → be → positioned | 6 |
| diffuser → be → arranged | 6 |
| negative | neutral | positive |
| 0.056 | 0.804 | 0.139 |
| Raw frequency | 28 |
| Normalized frequency | 0.655 |
| Modifier score | 0.500 |
| Perplexity | 171.350 |