| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] have been caused [prep] a | 11 |
|
| 2 | [noun] have been caused [prep] a | 11 |
|
| 3 | [modal v] have been caused [prep] a | 10 |
|
| 4 | [vb mod] have been caused [prep] a | 10 |
|
| 5 | [verb] have been caused [prep] a | 8 |
|
| 6 | [vb pp] have been caused [prep] a | 7 |
|
| 7 | may have been caused [prep] a | 5 |
|
| 8 | may have been caused [prep] a | 5 |
|
| 9 | have been caused [prep] a [noun] | 29 |
|
| 10 | have been caused [prep] a [noun sg] | 28 |
|
| 11 | have been caused [prep] a [adj] | 6 |
|
| 12 | have been caused [prep] a [adj] | 6 |
|
