| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb past] [prep] | 8214 |
|
| 2 | [prep] which [vb past] | 1318 |
|
| 3 | [prep] which [prep] | 493 |
|
| 4 | [prep] [vb past] [prep] | 207 |
|
