| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have played a key [noun sg] | 25 |
|
| 2 | have played a key role | 23 |
|
| 3 | have played a key role | 23 |
|
| 4 | had played a key [noun] | 10 |
|
| 5 | has played a key [noun] | 6 |
|
| 6 | have played a key [noun] | 5 |
|
