| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [vb past] [pron] | 5862 |
|
| 2 | [verb] [pron] [vb past] [pron] | 5328 |
|
| 3 | [verb] when [pron] [vb past] | 3156 |
|
| 4 | [verb] when [pron] [pron] | 20 |
|
