| always | 19 | degree |
| very | 14 | degree |
| in the school | 8 | location |
| classroom → be → clean | 208 |
| classroom → be kept → clean | 10 |
| classroom → be kept → the cleanest | 4 |
| classroom → keep → clean | 3 |
| negative | neutral | positive |
| 0.018 | 0.144 | 0.838 |
| Raw frequency | 225 |
| Normalized frequency | 0.923 |
| Modifier score | 1.000 |
| Perplexity | 264.312 |