| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] at the [adj] [noun pl] ['s] | 19 |
|
| 2 | [vb pp] at the [adj] [noun pl] ' | 14 |
|
| 3 | [vb pp] at the [adj] [noun pl] ' | 14 |
|
| 4 | held at the [adj] [noun pl] [unc] | 8 |
|
| 5 | [vb pp] at the [adj] societies [unc] | 7 |
|
| 6 | [vb pp] at the scientific [noun pl] [unc] | 7 |
|
| 7 | [vb pp] at the [adj] [noun pl] 's | 5 |
|
| 8 | [vb pp] at the [adj] [noun pl] 's | 5 |
|
