| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be held at [art] scientific [noun pl] | 7 |
|
| 2 | [be] held at [art] scientific [noun pl] | 7 |
|
| 3 | [be] held at [art] scientific societies | 7 |
|
| 4 | [be] held at the scientific [noun pl] | 7 |
|
| 5 | be held at [art] scientific [noun pl] | 6 |
|
| 6 | [be] held at [art] scientific [noun pl] | 6 |
|
