| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be caused by a [adj] | 26 |
|
| 2 | be caused [prep] a [adj] | 24 |
|
| 3 | be caused [prep] a [adj] | 19 |
|
| 4 | be caused [prep] an [adj] | 8 |
|
