| extremely | 11 | degree |
| compared to the mig-21 | 9 | other |
| for many combat roles | 8 | cause |
| aircraft → be → expensive | 47 |
| aircraft → be expensive to → operate | 9 |
| aircraft → be → costly | 6 |
| aircraft → be expensive to → purchase | 4 |
| aircraft → become → expensive | 3 |
| aircraft → be expensive to → fly | 3 |
| aircraft → be expensive to → run | 3 |
| negative | neutral | positive |
| 0.548 | 0.377 | 0.075 |
| Raw frequency | 75 |
| Normalized frequency | 0.595 |
| Modifier score | 0.725 |
| Perplexity | 304.286 |