| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to have [been] [verb] [prep] a | 162 |
|
| 2 | to have [been] [vb pp] [prep] a | 159 |
|
| 3 | have [been] caused [prep] a | 35 |
|
| 4 | [verb] [been] caused [prep] a | 35 |
|
| 5 | to have [been] caused [prep] [art] | 19 |
|
| 6 | to have [been] caused [prep] [art] | 19 |
|
| 7 | to have [been] caused [prep] a | 13 |
|
| 8 | to have [be] caused [prep] a | 9 |
|
| 9 | to have [been] caused [prep] a | 9 |
|
| 10 | [to-vb] [been] caused [prep] a | 9 |
|
| 11 | to have [been] cause [prep] a | 9 |
|
