| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] carried out at the | 31 |
|
| 2 | be carried out at the | 31 |
|
| 3 | [was/were] carried out at the | 9 |
|
| 4 | be carried out at the | 8 |
|
| 5 | [be] carried out at the | 8 |
|
| 6 | was carried out at the | 7 |
|
| 7 | [is] carried out at the | 7 |
|
| 8 | is carried out at the | 7 |
|
