| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have [vb pp] [verb] | 404 |
|
| 2 | study have [vb pp] [verb] | 54 |
|
| 3 | study which have [verb] | 36 |
|
| 4 | study which have [vb pp] | 36 |
|
