| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have had a [adj] impact [prep] | 53 |
|
| 2 | have had a [adj] impact [prep] | 53 |
|
| 3 | have had a [adj] impact [prep] | 50 |
|
| 4 | have had a [adj] impact on | 48 |
|
| 5 | have had a [adj] impact on | 48 |
|
| 6 | has had a [adj] impact [prep] | 28 |
|
| 7 | have had a [adj] impact [prep] | 12 |
|
| 8 | have had a major impact [prep] | 10 |
|
| 9 | have had a major impact [prep] | 10 |
|
| 10 | have had a significant impact [prep] | 9 |
|
| 11 | have had a significant impact [prep] | 9 |
|
| 12 | had had a [adj] impact [prep] | 5 |
|
