| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [vb base] [prep] | 3725 |
|
| 2 | staff who [vb base] | 177 |
|
| 3 | staff [vb base] [prep] | 149 |
|
| 4 | staff who [prep] | 5 |
|
