| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was not possible [to-vb] a | 19 |
|
| 2 | [was/were] not possible [to-vb] a | 15 |
|
| 3 | [was/were] not possible [to-vb] a | 12 |
|
| 4 | [was/were] not possible [to-vb] an | 7 |
|
