| very | 11 | degree |
| for some women | 8 | transitive-object |
| for the world economic system | 7 | transitive-object |
| period → be → difficult | 36 |
| period → be → challenging | 10 |
| period → be → difficult one | 8 |
| period → seem → challenging | 8 |
| period → be → difficult time | 3 |
| period → be → difficulty | 3 |
| negative | neutral | positive |
| 0.510 | 0.397 | 0.094 |
| Raw frequency | 68 |
| Normalized frequency | 0.515 |
| Modifier score | 0.800 |
| Perplexity | 252.933 |