| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [vb past] [prep] | 9041 |
|
| 2 | [vb past] be [prep] | 4611 |
|
| 3 | who [vb past] be | 3396 |
|
| 4 | who be [prep] | 2896 |
|
