| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] not possible [to-vb] | 120 |
|
| 2 | not possible [to-vb] a | 61 |
|
| 3 | [was/were] possible [to-vb] a | 50 |
|
| 4 | [was/were] not [to-vb] a | 26 |
|
