| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they make a [adj] contribution [prep] | 5 |
|
| 2 | they make a [adj] contribution to | 5 |
|
| 3 | they make a [adj] contribution to | 5 |
|
| 4 | they make a [adj] contribution [prep] | 5 |
|
