| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] not proof [prep] | 11 |
|
| 2 | be not proof [prep] | 11 |
|
| 3 | [is] not proof [prep] | 6 |
|
| 4 | is not proof [prep] | 5 |
|
| 5 | [was/were] not proof [prep] | 5 |
|
