| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [verb] a [adj] effect | 11 |
|
| 2 | had [vb pp] a [adj] effect | 11 |
|
| 3 | had had a [adj] effect | 8 |
|
| 4 | had have a [adj] effect | 8 |
|
