| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [prep] [det] | 23414 |
|
| 2 | at [pron] [prep] | 3698 |
|
| 3 | at [pron] [det] | 1266 |
|
| 4 | at [prep] [det] | 188 |
|
