| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [not/n't] [verb] it [was/were] | 281 |
|
| 2 | [not/n't] [verb] whether it [was/were] | 76 |
|
| 3 | [vb past] [not/n't] [verb] whether it | 20 |
|
