| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [art] | 2428 |
|
| 2 | at [pron] [art] | 1113 |
|
| 3 | at [Wh det] [art] | 953 |
|
| 4 | at what [art] | 84 |
|
