| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb mod] have [verb] to | 84 |
|
| 2 | [pron] [vb mod] have contribute to | 16 |
|
| 3 | [Wh det] [vb mod] have contribute [prep] | 10 |
|
| 4 | [Wh det] [vb mod] have contribute to | 10 |
|
| 5 | [Wh det] [vb mod] [vb infin] contribute to | 10 |
|
| 6 | [Wh det] [modal v] have contribute to | 10 |
|
| 7 | [Wh det] [vb mod] [verb] contribute to | 10 |
|
