| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when did [pron] [noun] [vb infin] | 9 |
|
| 2 | when did [pos pn] [noun] [vb infin] | 9 |
|
| 3 | when did your [noun] [vb infin] | 8 |
|
| 4 | when did your [noun] [vb infin] | 8 |
|
| 5 | when did [pron] [noun sg] [vb infin] | 7 |
|
