| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [verb] [art] | 53501 |
|
| 2 | when [verb] [art] | 1914 |
|
| 3 | [vb past] when [art] | 554 |
|
| 4 | [vb past] when [verb] | 150 |
|
