| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [verb] [prep] | 17588 |
|
| 2 | which had been [verb] | 2021 |
|
| 3 | which had [verb] [prep] | 1046 |
|
| 4 | which had been [prep] | 113 |
|
