| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have taken place [prep] a | 38 |
|
| 2 | have taken place [prep] a | 33 |
|
| 3 | has taken place [prep] a | 13 |
|
| 4 | had taken place [prep] a | 13 |
|
| 5 | have taken place in a | 9 |
|
| 6 | have taken place in a | 9 |
|
| 7 | have taken place [prep] an | 5 |
|
| 8 | have taken place at a | 5 |
|
| 9 | have taken place [prep] a | 5 |
|
| 10 | have taken place at a | 5 |
|
