| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] [verb] [pron] | 1051 |
|
| 2 | [Wh det] could [verb] [pron] | 143 |
|
| 3 | [prep] [Wh det] could [verb] | 96 |
|
