| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when did [pers pn] [vb infin] that | 22 |
|
| 2 | when [vb past] [pers pn] [vb infin] that | 22 |
|
| 3 | when [vb past] [pers pn] [vb infin] that | 22 |
|
| 4 | when [vb past] you [vb infin] that | 12 |
|
