| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb mod] [verb] to | 1162 |
|
| 2 | [pron] [vb mod] contribute to | 89 |
|
| 3 | [Wh det] [vb mod] contribute [prep] | 33 |
|
| 4 | [Wh det] [vb mod] contribute [prep] | 33 |
|
| 5 | [Wh det] [modal v] contribute to | 32 |
|
| 6 | [Wh det] [vb mod] contribute to | 32 |
|
