| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [vb pp] [prep] | 15645 |
|
| 2 | they had [vb pp] [prep] | 1443 |
|
| 3 | they had been [vb pp] | 907 |
|
| 4 | they had been [prep] | 201 |
|
| 5 | they been [vb pp] [prep] | 15 |
|
