| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a [adj] contribution to [noun] | 70 |
|
| 2 | [verb] a [adj] [noun] to knowledge | 7 |
|
| 3 | [verb] a [adj] contribution to knowledge | 5 |
|
| 4 | [verb] a [adj] contribution [prep] knowledge | 5 |
|
| 5 | [verb] a [adj] contribution to knowledge | 5 |
|
| 6 | [verb] a [adj] contribution [prep] knowledge | 5 |
|
| 7 | [verb] [art] [adj] contribution to knowledge | 5 |
|
