| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have an important role play in | 40 |
|
| 2 | have an important role to play in | 40 |
|
| 3 | have an important role play in | 18 |
|
| 4 | has an important role play in | 11 |
|
| 5 | had an important role play in | 6 |
|
