| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] has make a [adj] contribution | 6 |
|
| 2 | [noun prp] has made [art] [adj] contribution | 6 |
|
| 3 | [noun prp] has make [art] [adj] contribution | 6 |
|
| 4 | [noun prp] has make a [adj] contribution | 5 |
|
