| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] when [pron] [verb] | 520 |
|
| 2 | [Wh det] [to-vb] when [pron] | 40 |
|
| 3 | [Wh det] when [pron] [verb] | 23 |
|
| 4 | [Wh det] [to-vb] [pron] [verb] | 18 |
|
