| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] have | 2634 |
|
| 2 | [Wh det] must have | 231 |
|
| 3 | [prep] [Wh det] must | 173 |
|
| 4 | [prep] must have | 8 |
|
