| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [verb] [det] effect | 9 |
|
| 2 | had [vb pp] [det] effect | 8 |
|
| 3 | had had [det] effect | 6 |
|
| 4 | had have [det] effect | 6 |
|
