| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been one of | 88 |
|
| 2 | [vb mod] have been one [prep] | 88 |
|
| 3 | [vb mod] have been one of | 88 |
|
| 4 | must have been one [prep] | 35 |
|
| 5 | would have been one [prep] | 21 |
|
| 6 | may have been one [prep] | 9 |
|
| 7 | should have been one [prep] | 8 |
|
| 8 | could have been one [prep] | 6 |
|
