| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb base] taken place | 50 |
|
| 2 | which [vb base] [verb] place | 50 |
|
| 3 | which [vb base] take place | 50 |
|
| 4 | which [vb base] [vb pp] place | 50 |
|
| 5 | which have [verb] place | 50 |
|
