| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [verb] [verb] | 1342 |
|
| 2 | [adv] [pron] [verb] [vb infin] | 989 |
|
| 3 | [Wh adv] [pron] [verb] [vb infin] | 125 |
|
| 4 | when [pron] [verb] [vb infin] | 20 |
|
