| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have an important role to play in | 40 |
|
| 2 | have an [adj] role to play in | 19 |
|
| 3 | has an [adj] role to play in | 14 |
|
| 4 | had an [adj] role to play in | 6 |
|
