| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | contributed to a [noun] | 51 |
|
| 2 | has contributed to a | 17 |
|
| 3 | has to a [noun] | 6 |
|
| 4 | has contributed to [noun] | 6 |
|
| 5 | has contributed a [noun] | 5 |
|
