| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [verb] [vb pp] [pron] | 955 |
|
| 2 | [pron] [verb] [vb pp] [pron] at | 292 |
|
| 3 | when [pron] [verb] [pron] at | 65 |
|
| 4 | when [pron] [verb] [vb pp] at | 39 |
|
