| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] be carried out at [noun] | 9 |
|
| 2 | [noun pl] [be] carried out at [noun] | 9 |
|
| 3 | [noun pl] [was/were] carried out at [noun] | 6 |
|
| 4 | [noun pl] were carried out at [noun] | 6 |
|
