| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may have [adj] [noun] | 526 |
|
| 2 | [vb mod] have [adj] impact | 49 |
|
| 3 | [modal v] have [adj] impact | 49 |
|
| 4 | may [verb] [adj] impact | 8 |
|
| 5 | may have [adj] impact | 6 |
|
