| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | carried out at the [adj] [noun sg] | 17 |
|
| 2 | carried out at [art] [adj] [noun sg] | 17 |
|
| 3 | carried out at a [adj] [noun sg] | 5 |
|
| 4 | carried out at [art] [adj] time | 5 |
|
