| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [adv] had a [noun] | 99 |
|
| 2 | have [adv] had a impact | 12 |
|
| 3 | [verb] [adv] had a impact | 12 |
|
| 4 | has [adv] [verb] a impact | 8 |
|
| 5 | has [adv] [vb pp] a impact | 8 |
|
| 6 | [vb -s] [adv] had a impact | 6 |
|
| 7 | has [adv] had [art] impact | 6 |
|
| 8 | has [adv] had a impact | 6 |
|
| 9 | has [adv] have a impact | 6 |
|
