| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [was/were] possible [to-vb] | 429 |
|
| 2 | it [was/were] not possible | 185 |
|
| 3 | [was/were] not possible [to-vb] | 120 |
|
| 4 | it [was/were] not [to-vb] | 41 |
|
| 5 | it not possible [to-vb] | 11 |
|
