| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb past] [been] [verb] [prep] | 1315 |
|
| 2 | [vb past] [been] [verb] [prep] [det] | 761 |
|
| 3 | which [vb past] [verb] [prep] [det] | 44 |
|
| 4 | which [vb past] [been] [verb] [det] | 14 |
|
