| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be held at the [adj] [noun pl] | 16 |
|
| 2 | [be] held at the [adj] [noun pl] | 14 |
|
| 3 | [be] held at the [adj] [noun pl] | 11 |
|
| 4 | be held at the [adj] [noun pl] | 11 |
|
| 5 | [be] held at the [adj] societies | 7 |
|
| 6 | [be] held at the scientific [noun pl] | 7 |
|
| 7 | [be] held at the scientific [noun pl] | 7 |
|
