| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been caused by [adj] [noun] | 9 |
|
| 2 | have [been] caused by [adj] [noun] | 9 |
|
| 3 | have [been] caused by [adj] [noun sg] | 8 |
|
| 4 | have [been] caused by [adj] [noun] | 6 |
|
