| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [verb] | 58937 |
|
| 2 | [vb infin] [pron] [verb] | 29038 |
|
| 3 | [vb infin] when [pron] | 1179 |
|
| 4 | [vb infin] when [verb] | 140 |
|
