| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [verb] a major contribution to | 13 |
|
| 2 | [verb] [verb] a major contribution to | 13 |
|
| 3 | [verb] make a major contribution to | 12 |
|
| 4 | have [verb] a major contribution to | 11 |
|
| 5 | [verb] made a major contribution to | 11 |
|
| 6 | [verb] [vb pp] a major contribution to | 11 |
|
| 7 | has [verb] a major contribution to | 7 |
|
| 8 | [vb -s] [verb] a major contribution to | 7 |
|
