| because of the continuous changes | 4 | cause |
| without unnecessary dust | 3 | other |
| very quietly | 2 | manner |
| engine → run → clean | 9 |
| engine → stay → clean | 6 |
| engine → remain → clean | 4 |
| negative | neutral | positive |
| 0.071 | 0.433 | 0.496 |
| Raw frequency | 19 |
| Normalized frequency | 0.320 |
| Modifier score | 0.500 |
| Perplexity | 362.120 |