| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [noun] [noun sg] he | 9 |
|
| 2 | at a [noun] [noun] he | 9 |
|
| 3 | at a [noun sg] [noun] he | 9 |
|
| 4 | at a [noun] conference he | 5 |
|
| 5 | at a [noun] conference he | 5 |
|
