| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | seem have [vb pp] a [adj] effect | 6 |
|
| 2 | seem to have [verb] a [adj] effect | 6 |
|
| 3 | seem have [verb] a [adj] effect | 6 |
|
| 4 | seem have have a [adj] effect | 6 |
|
| 5 | seem have had a [adj] effect | 6 |
|
