| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | might have been [verb] [det] | 9 |
|
| 2 | might [vb infin] been [verb] [det] | 9 |
|
| 3 | might have been [verb] [det] | 9 |
|
| 4 | might [verb] been [vb pp] [det] | 6 |
|
