| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] have been [noun pl] | 30 |
|
| 2 | may [adv] have [been] [noun pl] | 10 |
|
| 3 | would [adv] have [been] [noun pl] | 7 |
|
| 4 | [vb mod] well have [been] [noun pl] | 6 |
|
