| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | play a central role in [adj] | 12 |
|
| 2 | [verb] a central role in [adj] | 10 |
|
| 3 | [verb] a central role in [det] | 7 |
|
| 4 | [vb -s] a central role in [adj] | 6 |
|
