| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a [adj] contribution to | 401 |
|
| 2 | [verb] a [adj] contribution [verb] | 43 |
|
| 3 | a [adj] contribution to [verb] | 35 |
|
| 4 | [verb] a contribution to [verb] | 5 |
|
