| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] can [verb] [is] | 9 |
|
| 2 | [Wh pn] can [vb infin] [is] | 9 |
|
| 3 | [Wh pn] can [verb] is | 9 |
|
| 4 | who can [verb] [is] | 9 |
|
