| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun prp] [was/were] [verb] | 264 |
|
| 2 | [prep] [noun prp] [was/were] call | 28 |
|
| 3 | at [noun prp] [be] call | 7 |
|
| 4 | at [noun] [was/were] call | 6 |
|
