| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have a positive effect | 37 |
|
| 2 | [vb infin] a positive effect | 11 |
|
| 3 | have a positive effect | 10 |
|
| 4 | had a positive effect | 8 |
|
| 5 | [vb pp] a positive effect | 8 |
|
| 6 | [vb past] a positive effect | 7 |
|
| 7 | had a positive effect | 6 |
|
