| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a key role | 195 |
|
| 2 | has a [adj] role | 114 |
|
| 3 | has a [adj] role | 106 |
|
| 4 | have a key role | 40 |
|
| 5 | [vb -s] a key role | 39 |
|
| 6 | has a key [noun] | 19 |
|
| 7 | has [art] key role | 15 |
|
| 8 | has [art] key role | 15 |
|
| 9 | has a key role | 14 |
|
| 10 | has a key role | 14 |
|
