| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] at [noun pl] | 970 |
|
| 2 | at certain [noun pl] | 249 |
|
| 3 | [noun pl] at certain | 42 |
|
| 4 | [noun pl] certain [noun pl] | 34 |
|
