| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which has [verb] [art] [adj] effect | 7 |
|
| 2 | [Wh det] has [verb] [art] [adj] effect | 7 |
|
| 3 | [Wh det] has [vb pp] [art] [adj] effect | 7 |
|
| 4 | [Wh det] has have [art] [adj] effect | 6 |
|
| 5 | [Wh det] has had [art] [adj] effect | 6 |
|
| 6 | [Wh det] has [verb] a [adj] effect | 5 |
|
