| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been cause [prep] | 215 |
|
| 2 | [verb] to have been [prep] | 187 |
|
| 3 | to have been cause [prep] | 33 |
|
| 4 | [verb] to have been cause | 28 |
|
