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