| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] staff had been [vb pp] | 5 |
|
| 2 | [adj] staff had been [vb pp] | 5 |
|
| 3 | staff had been [adv] [vb pp] | 5 |
|
| 4 | staff had been [adv] [vb pp] | 5 |
|
| 5 | staff had been [vb pp] [prep] | 9 |
|
| 6 | staff had been [vb pp] [prep] | 9 |
|
