| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a [adj] contribution to | 401 |
|
| 2 | a [adj] contribution to the | 269 |
|
| 3 | [verb] a contribution to the | 52 |
|
| 4 | [verb] [adj] contribution to the | 40 |
|
