| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [vb pp] [prep] [det] | 600 |
|
| 2 | they had been [vb pp] [prep] | 368 |
|
| 3 | they had [vb pp] [prep] [det] | 49 |
|
| 4 | they had been [prep] [det] | 13 |
|
| 5 | they had been [vb pp] [det] | 10 |
|
