| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] contribute to | 373 |
|
| 2 | contribute to [art] | 314 |
|
| 3 | [vb mod] to [art] | 85 |
|
| 4 | [vb mod] contribute [art] | 24 |
|
