| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | might [adv] have been | 475 |
|
| 2 | [coord] [adv] have been | 196 |
|
| 3 | [coord] might [adv] have | 59 |
|
| 4 | [coord] might have been | 28 |
|
