| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [verb] played a [adj] role | 8 |
|
| 2 | who have played a [adj] role | 8 |
|
| 3 | who [vb past] played a [adj] role | 7 |
|
| 4 | who had played a [adj] role | 6 |
|
| 5 | who [verb] played a key role | 5 |
|
