| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [verb] a [adj] effect | 15 |
|
| 2 | [to-vb] have a [adj] effect | 15 |
|
| 3 | to have [verb] a [adj] effect | 14 |
|
| 4 | [to-vb] had a [adj] effect | 14 |
|
| 5 | [to-vb] [vb pp] a [adj] effect | 14 |
|
