| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had have a [adj] impact on | 5 |
|
| 2 | had have a [adj] impact on | 5 |
|
| 3 | had had a [adj] impact on | 5 |
|
| 4 | had have a [adj] impact on | 5 |
|
