| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [vb pp] | 31868 |
|
| 2 | had [adv] [vb pp] | 22880 |
|
| 3 | been [adv] [vb pp] | 8364 |
|
| 4 | had been [adv] | 5544 |
|
