| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] previously been [verb] for | 8 |
|
| 2 | have previously been [verb] for | 8 |
|
| 3 | [verb] previously been [vb pp] for | 7 |
|
| 4 | [vb past] previously been [verb] for | 5 |
|
| 5 | had previously been [verb] for | 5 |
|
