| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be performed at the [noun sg] [prep] | 6 |
|
| 2 | [be] performed at the [noun sg] [prep] | 6 |
|
| 3 | performed at the [noun] [noun sg] [prep] | 6 |
|
| 4 | performed at the [noun prp] [noun sg] [prep] | 6 |
|
