| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have played a key [noun sg] [prep] | 22 |
|
| 2 | have played a key [noun] in | 22 |
|
| 3 | have played a key role [prep] | 20 |
|
| 4 | have played a key role [prep] | 20 |
|
| 5 | had played a key [noun] [prep] | 9 |
|
| 6 | has played a key [noun] [prep] | 5 |
|
