| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [vb pp] [prep] | 15645 |
|
| 2 | been [vb pp] [prep] a | 6770 |
|
| 3 | had [vb pp] [prep] a | 2885 |
|
| 4 | had been [vb pp] a | 348 |
|
| 5 | had been [prep] a | 282 |
|
