| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have played a major role | 26 |
|
| 2 | has [vb pp] a major role | 9 |
|
| 3 | have [vb pp] a major role | 8 |
|
| 4 | had [vb pp] a major role | 6 |
|
