| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [verb] to | 7089 |
|
| 2 | they [vb base] to | 3284 |
|
| 3 | [pron] contribute to | 106 |
|
| 4 | they contribute to | 39 |
|
| 5 | they contribute [prep] | 29 |
|
| 6 | they contribute [prep] | 29 |
|
| 7 | they contribute to | 26 |
|
