| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] to [be] [verb] [prep] | 3564 |
|
| 2 | which [vb past] [be] [verb] [prep] | 1325 |
|
| 3 | which [vb past] to [be] [verb] | 293 |
|
| 4 | which [vb past] to [be] [prep] | 20 |
|
