| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] have been [adj] | 1253 |
|
| 2 | might [adv] have been | 475 |
|
| 3 | might have been [adj] | 322 |
|
| 4 | might [adv] have [adj] | 18 |
|
