| to students at compulsory school levels | 9 | transitive-object |
| through the publisher | 5 | other |
| supposedly | 4 | degree |
| textbook → be → free | 61 |
| textbook → be provided for → free online | 3 |
| negative | neutral | positive |
| 0.061 | 0.430 | 0.509 |
| Raw frequency | 64 |
| Normalized frequency | 0.641 |
| Modifier score | 1.000 |
| Perplexity | 134.767 |