| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] at [det] | 1237 |
|
| 2 | which [vb past] [det] | 1231 |
|
| 3 | which [vb past] at | 394 |
|
| 4 | which at [det] | 76 |
|
