| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | would have be quite impossible | 5 |
|
| 2 | would have [be] quite impossible | 5 |
|
| 3 | would have [be] quite impossible | 5 |
|
| 4 | would have been quite impossible | 5 |
|
| 5 | would have [been] quite impossible | 5 |
|
