| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [vb base] [prep] | 2881 |
|
| 2 | [verb] [pron] [vb base] [prep] | 2643 |
|
| 3 | [verb] when [pron] [vb base] | 1781 |
|
| 4 | [verb] when [pron] [prep] | 9 |
|
