| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has played a major role in | 9 |
|
| 2 | has [vb pp] a major role in | 9 |
|
| 3 | has [verb] a major role in | 9 |
|
| 4 | has play a major role in | 9 |
|
