| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] have had [art] [adj] impact | 24 |
|
| 2 | [noun sg] have have a [adj] impact | 21 |
|
| 3 | [noun sg] has have [art] [adj] impact | 17 |
|
| 4 | [noun sg] have have [art] major impact | 5 |
|
