| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has made a [adj] contribution | 28 |
|
| 2 | have made a major contribution | 14 |
|
| 3 | [verb] made a major contribution | 14 |
|
| 4 | has made a major [noun] | 12 |
|
| 5 | has made [art] major contribution | 7 |
|
| 6 | [vb -s] made a major contribution | 7 |
|
| 7 | has made a major contribution | 7 |
|
| 8 | has [vb pp] a major contribution | 7 |
|
| 9 | has make a major contribution | 7 |
|
| 10 | has made [art] major contribution | 7 |
|
| 11 | has [verb] a major contribution | 7 |
|
