| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at that [noun] | 5194 |
|
| 2 | at that [noun sg] | 5165 |
|
| 3 | at [adj] conference | 42 |
|
| 4 | [prep] that conference | 25 |
|
| 5 | at that conference | 9 |
|
