| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [verb] [art] [adj] contribution | 6 |
|
| 2 | it [vb mod] [verb] [art] [adj] contribution | 6 |
|
| 3 | it [verb] [art] [adj] contribution [prep] | 11 |
|
| 4 | it [verb] [art] [adj] contribution [prep] | 11 |
|
| 5 | it [verb] [art] [adj] contribution to | 9 |
|
| 6 | it [verb] [art] [adj] contribution to | 9 |
|
