| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [vb pp] place [prep] a | 13 |
|
| 2 | [vb past] taken place [prep] a | 13 |
|
| 3 | [vb past] [vb pp] place [prep] a | 10 |
|
| 4 | [vb past] [vb pp] place in a | 5 |
|
