| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] had had [art] effect | 8 |
|
| 2 | [noun sg] had had [art] effect | 6 |
|
| 3 | had had [art] [adj] effect | 13 |
|
| 4 | had had [art] [adj] effect | 13 |
|
| 5 | had had [art] effect [prep] | 8 |
|
| 6 | had had [art] effect [prep] | 8 |
|
