| often | 8 | degree |
| very | 6 | degree |
| without such cooperation | 5 | other |
| discovery → be → expensive | 44 |
| discovery → be → costly | 10 |
| discovery → become → expensive | 4 |
| negative | neutral | positive |
| 0.522 | 0.383 | 0.095 |
| Raw frequency | 58 |
| Normalized frequency | 0.535 |
| Modifier score | 0.600 |
| Perplexity | 222.145 |