| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at which [pers pn] can [verb] | 30 |
|
| 2 | at which [pers pn] can [vb infin] | 30 |
|
| 3 | at which [pers pn] can [verb] | 30 |
|
| 4 | at which they can [verb] | 11 |
|
| 5 | at which you can [verb] | 9 |
|
