| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [vb pp] for some | 31 |
|
| 2 | had been [vb pp] for many | 15 |
|
| 3 | had been [vb pp] for this | 14 |
|
| 4 | had been [vb pp] for several | 7 |
|
| 5 | had been used for [det] | 6 |
|
