| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] which [vb past] [prep] | 227 |
|
| 2 | event which [vb past] [prep] | 42 |
|
| 3 | [prep] event which [vb past] | 24 |
|
| 4 | [prep] event [vb past] [prep] | 11 |
|
