| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which had [been] [verb] | 2021 |
|
| 2 | [verb] had [been] [verb] | 245 |
|
| 3 | [verb] which had [verb] | 29 |
|
| 4 | [verb] which had [been] | 18 |
|
