| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been cause [prep] | 61 |
|
| 2 | to have been cause [prep] | 33 |
|
| 3 | [vb past] to have been [prep] | 12 |
|
| 4 | [vb past] to have been cause | 7 |
|
