| apply to main verb | 0.40 |
| lie at the center of se… | 0.28 |
| take narrow scope | 0.28 |
| apply to the modal | 0.25 |
| apply to the auxiliary | 0.25 |
| draw on unavailable arc… | 0.25 |
| draw on many other sour… | 0.25 |
| precede disjunction | 0.25 |
| deny the possibility | 0.16 |
| true | 0.84 |
| equivalent | 0.44 |
| impossible | 0.43 |
| provable | 0.37 |
| logical place | 0.25 |