| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [modal v] [verb] [prep] | 1243 |
|
| 2 | [modal v] [verb] us [prep] | 662 |
|
| 3 | [Wh pn] [verb] us [prep] | 93 |
|
| 4 | [Wh pn] [modal v] [verb] us | 79 |
|
