| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [vb past] [verb] | 4167 |
|
| 2 | only when [pron] [verb] | 288 |
|
| 3 | only [pron] [vb past] [verb] | 148 |
|
| 4 | only when [pron] [vb past] | 138 |
|
