| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [vb pp] prior to | 7 |
|
| 2 | has been [vb pp] prior [prep] | 7 |
|
| 3 | has been [vb pp] prior [prep] | 7 |
|
| 4 | has been [vb pp] prior to | 7 |
|
