| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] be | 10899 |
|
| 2 | [Wh det] be then | 589 |
|
| 3 | [prep] [Wh det] then | 17 |
|
| 4 | [prep] be then | 16 |
|
