| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] which [vb mod] contribute to | 11 |
|
| 2 | [noun sg] which [modal v] contribute to | 11 |
|
| 3 | [noun sg] which will contribute to | 7 |
|
| 4 | [noun sg] which will contribute to | 7 |
|
