| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] a [det] [noun pl] | 239 |
|
| 2 | at a [det] [noun pl] | 39 |
|
| 3 | at [noun prp] a [det] | 16 |
|
| 4 | at [noun prp] [det] [noun pl] | 13 |
|
