| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [vb pp] a significant [noun sg] to | 5 |
|
| 2 | has [vb pp] a significant contribution to | 5 |
|
| 3 | has made a significant [noun] to | 5 |
|
| 4 | has [vb pp] a significant contribution to | 5 |
|
