| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] which [vb past] | 1318 |
|
| 2 | which [vb past] at | 394 |
|
| 3 | [prep] which at | 78 |
|
| 4 | [prep] [vb past] at | 20 |
|
