| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] a [noun] | 1050 |
|
| 2 | might have [verb] a [noun] | 164 |
|
| 3 | might have been a [noun] | 115 |
|
| 4 | might have been [verb] [noun] | 18 |
|
| 5 | might have been [verb] a | 13 |
|
