| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which had been [verb] [det] [noun sg] | 8 |
|
| 2 | which [vb past] been [verb] [det] [noun sg] | 8 |
|
| 3 | which [vb past] been [vb pp] [det] [noun sg] | 6 |
|
