| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] had been | 671 |
|
| 2 | [prep] which [verb] been | 334 |
|
| 3 | [prep] which have been | 334 |
|
| 4 | [prep] which had [been] | 132 |
|
| 5 | [prep] which had [be] | 132 |
|
| 6 | [prep] which had be | 132 |
|
| 7 | [prep] which [vb past] been | 132 |
|
