| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [vb pp] at the [noun] | 1392 |
|
| 2 | [was/were] [vb pp] at the [noun sg] | 1126 |
|
| 3 | [was/were] [vb pp] [prep] the conference | 24 |
|
| 4 | [was/were] [vb pp] [prep] the conference | 24 |
|
| 5 | [was/were] [vb pp] at [art] conference | 21 |
|
| 6 | [was/were] [vb pp] at [art] conference | 21 |
|
| 7 | [be] [vb pp] at the conference | 15 |
|
| 8 | [was/were] [verb] at the conference | 15 |
|
| 9 | [was/were] [vb pp] at the conference | 14 |
|
| 10 | [was/were] [vb pp] at the conference | 14 |
|
| 11 | [was/were] [vb pp] at the conference | 14 |
|
