| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | make a [adj] contribution to | 373 |
|
| 2 | [be] a [adj] contribution to | 40 |
|
| 3 | [be] make a [adj] contribution | 20 |
|
| 4 | [be] make a contribution to | 5 |
|
