| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [vb past] [pron] | 5862 |
|
| 2 | [vb pp] when [pron] [vb past] | 929 |
|
| 3 | [vb pp] [pron] [vb past] [pron] | 307 |
|
| 4 | [vb pp] when [pron] [pron] | 6 |
|
