| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | carried out at [noun prp] [noun sg] | 12 |
|
| 2 | carried out at [noun prp] [noun prp] | 6 |
|
| 3 | carried out at [noun prp] university | 5 |
|
| 4 | carried out at [noun prp] university | 5 |
|
