| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] have been a | 25 |
|
| 2 | [vb base] to have been a | 21 |
|
| 3 | [vb base] [to-vb] been a | 21 |
|
| 4 | seem [verb] been a | 15 |
|
