| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [noun] | 174585 |
|
| 2 | [noun] caused [prep] [noun] | 570 |
|
| 3 | caused [prep] a [noun] | 264 |
|
| 4 | [noun] caused [prep] a | 132 |
|
