| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | might have been [det] [noun sg] | 20 |
|
| 2 | might have been [det] [noun] | 20 |
|
| 3 | might have been some [noun] | 12 |
|
| 4 | might have been that [noun] | 5 |
|
