| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] had a [adj] effect on | 105 |
|
| 2 | have had a [adj] effect on | 105 |
|
| 3 | had had a [adj] [noun] on | 23 |
|
| 4 | had had a [adj] [noun sg] on | 22 |
|
| 5 | had had a [adj] effect [prep] | 9 |
|
| 6 | [vb past] had a [adj] effect on | 7 |
|
| 7 | had had [art] [adj] effect on | 7 |
|
| 8 | had have a [adj] effect on | 7 |
|
| 9 | had [vb pp] a [adj] effect on | 7 |
|
| 10 | had had a [adj] effect on | 7 |
|
| 11 | had [verb] a [adj] effect on | 7 |
|
