| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [vb pp] a key [noun] | 16 |
|
| 2 | has [verb] a key [noun sg] | 16 |
|
| 3 | has become a key [noun] | 6 |
|
| 4 | has become a key [noun] | 6 |
|
| 5 | has [verb] a key role | 6 |
|
| 6 | has [verb] a key role | 6 |
|
| 7 | has play a key [noun] | 6 |
|
| 8 | has played a key [noun] | 6 |
|
