| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [was/were] [not/n't] [vb pp] | 661 |
|
| 2 | it [was/were] [not/n't] clear | 96 |
|
| 3 | it [was/were] [vb pp] clear | 53 |
|
| 4 | [was/were] [not/n't] [vb pp] clear | 11 |
|
