| for flight | 30 | purpose |
| very | 11 | degree |
| in their own right | 10 | other |
| aircraft → be → safe | 210 |
| aircraft → be safe to → fly | 36 |
| aircraft → be safe to → operate | 5 |
| aircraft → be under → safe | 4 |
| aircraft → be made → safe | 4 |
| aircraft → be in → safe condition | 4 |
| aircraft → be considered → safe | 3 |
| aircraft → be deemed → safe | 3 |
| negative | neutral | positive |
| 0.104 | 0.554 | 0.343 |
| Raw frequency | 269 |
| Normalized frequency | 0.831 |
| Modifier score | 0.667 |
| Perplexity | 202.081 |