| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [was/were] [adv] [verb] | 3981 |
|
| 2 | it [was/were] [adv] [vb pp] | 3283 |
|
| 3 | it [be] [adv] established | 91 |
|
| 4 | [pron] [was/were] [adv] established | 39 |
|
| 5 | it [was/were] [adv] established | 23 |
|
| 6 | it [was/were] [adv] establish | 22 |
|
