| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [prep] [conj] | 1447 |
|
| 2 | [to-vb] [prep] [subord] | 585 |
|
| 3 | [verb] [prep] when | 158 |
|
| 4 | [to-vb] [prep] when | 32 |
|
| 5 | [to-vb] [prep] when | 32 |
|
