| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] [be] | 18905 |
|
| 2 | which [vb past] [prep] | 8214 |
|
| 3 | which [vb past] [be] | 2801 |
|
| 4 | which [prep] [be] | 35 |
|
