| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] as [adv] have [be] | 8 |
|
| 2 | could [adv] as [adv] have be | 8 |
|
| 3 | could [adv] as [adv] have [been] | 8 |
|
| 4 | could [adv] as [adv] have been | 8 |
|
