| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] to have been [vb pp] by | 174 |
|
| 2 | [vb pp] to have been [verb] by | 174 |
|
| 3 | [verb] to have been caused by | 23 |
|
| 4 | [vb pp] to have been caused [prep] | 17 |
|
| 5 | [vb pp] [verb] been caused by | 17 |
|
| 6 | [vb pp] have been caused by | 17 |
|
| 7 | [vb pp] to have been caused [prep] | 17 |
|
| 8 | [vb pp] to have been caused by | 15 |
|
| 9 | [vb pp] to have [be] caused by | 15 |
|
| 10 | [vb pp] to have [been] caused by | 15 |
|
| 11 | [vb pp] [to-vb] been caused by | 15 |
|
| 12 | [vb pp] to have be caused by | 15 |
|
| 13 | [vb pp] to have been cause by | 15 |
|
