| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has played a key role [prep] | 5 |
|
| 2 | has played a key [noun] in | 5 |
|
| 3 | has played a key [noun sg] [prep] | 5 |
|
| 4 | has played a key role [prep] | 5 |
|
| 5 | has played a key [noun] [prep] | 5 |
|
| 6 | has played a key [noun] [prep] | 5 |
|
| 7 | has played a key [noun] in | 5 |
|
