| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [subord] contribute to the | 8 |
|
| 2 | [be] [verb] [subord] contribute to the | 8 |
|
| 3 | [verb] [subord] contribute to the [noun] | 7 |
|
| 4 | [verb] [subord] contribute to the [noun sg] | 7 |
|
