| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a [adj] contribution to | 411 |
|
| 2 | [conj] [verb] a [adj] contribution | 34 |
|
| 3 | [conj] a [adj] contribution to | 14 |
|
| 4 | [conj] [verb] a contribution to | 9 |
|
| 5 | [conj] [verb] [adj] contribution to | 5 |
|
