| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | as it [modal v] have been | 99 |
|
| 2 | as it [vb mod] have been | 99 |
|
| 3 | as it [modal v] have been | 98 |
|
| 4 | as it might have been | 32 |
|
| 5 | as it might have been | 32 |
|
| 6 | as it would have been | 29 |
|
| 7 | as it would have been | 29 |
|
| 8 | as it should have been | 18 |
|
| 9 | as it should have been | 18 |
|
| 10 | as it could have been | 7 |
|
| 11 | as it may have been | 7 |
|
| 12 | as it may have been | 7 |
|
| 13 | as it could have been | 7 |
|
