| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] as part of | 63 |
|
| 2 | has been [vb pp] as part of | 24 |
|
| 3 | have been [vb pp] as part of | 17 |
|
| 4 | had been [vb pp] as part of | 15 |
|
