| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [prep] [art] | 11350 |
|
| 2 | staff [prep] [art] | 1566 |
|
| 3 | [prep] staff [prep] | 765 |
|
| 4 | [prep] staff [art] | 15 |
|
