| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [vb pp] [to-vb] at | 17 |
|
| 2 | has been [vb pp] [to-vb] at | 15 |
|
| 3 | have been [vb pp] [to-vb] at | 14 |
|
| 4 | have been [vb pp] to look at | 14 |
|
| 5 | have been invited [to-vb] at | 11 |
|
| 6 | have been asked [to-vb] at | 9 |
|
| 7 | have been [vb pp] to speak at | 8 |
|
| 8 | have been forced [to-vb] at | 5 |
|
| 9 | 've been [vb pp] [to-vb] at | 5 |
|
