| very | 22 | degree |
| often | 16 | degree |
| for students | 9 | transitive-object |
| learning → be → hard | 258 |
| learning → be → tough | 44 |
| learning → be → hard task | 6 |
| learning → be → tough going | 4 |
| learning → be → tough task | 3 |
| negative | neutral | positive |
| 0.447 | 0.357 | 0.196 |
| Raw frequency | 315 |
| Normalized frequency | 0.645 |
| Modifier score | 0.583 |
| Perplexity | 18.457 |