| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | thought to have been [verb] [prep] | 86 |
|
| 2 | [verb] to have been cause [prep] | 25 |
|
| 3 | [vb pp] to have been cause [prep] | 17 |
|
| 4 | thought to have [been] cause [prep] | 7 |
|
| 5 | thought to have [be] cause [prep] | 7 |
|
| 6 | thought [verb] been cause [prep] | 7 |
|
| 7 | thought have been cause [prep] | 7 |
|
| 8 | think to have been cause [prep] | 7 |
|
| 9 | thought [to-vb] been cause [prep] | 7 |
|
| 10 | thought to have be cause [prep] | 7 |
|
