| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [vb mod] i [verb] to | 5 |
|
| 2 | [Wh pn] [modal v] i [vb infin] to | 5 |
|
| 3 | who [modal v] i [verb] to | 5 |
|
