| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | play a role in [adj] | 14 |
|
| 2 | [vb infin] a role in [adj] | 8 |
|
| 3 | have a role in [adj] | 7 |
|
| 4 | play a role in [adj] | 7 |
|
| 5 | [vb base] a role in [adj] | 5 |
|
