| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had had a [adj] effect [prep] | 8 |
|
| 2 | had have a [adj] effect [prep] | 8 |
|
| 3 | had have a [adj] effect [prep] | 8 |
|
| 4 | had have a [adj] effect on | 6 |
|
| 5 | had have a [adj] effect on | 6 |
|
