| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] have been [noun prp] | 19 |
|
| 2 | could [adv] have been [noun prp] | 10 |
|
| 3 | could [adv] have been [noun prp] | 10 |
|
| 4 | [modal v] well have been [noun prp] | 7 |
|
| 5 | might [adv] have been [noun prp] | 5 |
|
| 6 | might [adv] have been [noun prp] | 5 |
|
