| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to have been cause [prep] a | 9 |
|
| 2 | to have be cause [prep] a | 9 |
|
| 3 | to have [be] caused [prep] a | 9 |
|
| 4 | to have [been] cause [prep] a | 9 |
|
| 5 | to have [be] cause by a | 8 |
|
