| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] made a [adj] contribution | 28 |
|
| 2 | [verb] made a significant contribution | 15 |
|
| 3 | [vb -s] made a significant [noun] | 9 |
|
| 4 | [vb -s] [vb pp] a significant contribution | 5 |
|
| 5 | [vb -s] make a significant contribution | 5 |
|
| 6 | [vb -s] [verb] a significant contribution | 5 |
|
| 7 | [vb -s] made [art] significant contribution | 5 |
|
| 8 | [vb -s] made [art] significant contribution | 5 |
|
| 9 | [vb -s] made a significant contribution | 5 |
|
