| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun prp] was [vb pp] by | 35 |
|
| 2 | at [noun prp] is [vb pp] by | 10 |
|
| 3 | at [noun prp] were [vb pp] by | 6 |
|
| 4 | at [noun prp] be followed by | 5 |
|
