| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [be] [vb pp] | 82787 |
|
| 2 | [be] [vb pp] at | 6207 |
|
| 3 | [prep] [be] at | 910 |
|
| 4 | [prep] [vb pp] at | 27 |
|
