| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [vb past] [prep] | 5607 |
|
| 2 | [noun prp] [pron] [vb past] [prep] | 1419 |
|
| 3 | [noun prp] when [pron] [vb past] | 714 |
|
