| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [verb] place | 439 |
|
| 2 | had take place | 436 |
|
| 3 | had [vb pp] place | 425 |
|
| 4 | had taken place | 420 |
|
| 5 | had [to-vb] place | 17 |
|
| 6 | had to take place | 16 |
|
