| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] has a key role | 13 |
|
| 2 | [noun sg] has a key role | 12 |
|
| 3 | has [verb] a key role | 6 |
|
| 4 | has play a key role | 6 |
|
| 5 | has played a key role | 6 |
|
| 6 | has [vb pp] a key role | 6 |
|
| 7 | has a key role [to-vb] | 7 |
|
| 8 | has a key role play | 7 |
|
| 9 | has a key role [verb] | 7 |
|
| 10 | has a key role [prep] | 7 |
|
| 11 | has a key role to play | 7 |
|
| 12 | has a key role [prep] | 7 |
|
| 13 | has a key role in | 6 |
|
| 14 | has a key role in | 6 |
|
