| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] a [adj] impact | 34 |
|
| 2 | has a [adj] impact | 31 |
|
| 3 | [vb -s] a [adj] impact | 30 |
|
| 4 | [vb -s] a significant impact | 6 |
|
| 5 | [vb -s] a significant impact | 6 |
|
