| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] a major [noun] | 191 |
|
| 2 | [modal v] [verb] a [adj] contribution | 90 |
|
| 3 | [modal v] [verb] a [adj] contribution | 86 |
|
| 4 | [modal v] [verb] [art] major contribution | 10 |
|
| 5 | [modal v] [verb] [art] major contribution | 10 |
|
| 6 | [modal v] [verb] a major contribution | 9 |
|
| 7 | [modal v] [verb] a major contribution | 9 |
|
