| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [pron] [vb mod] be [verb] | 612 |
|
| 2 | at [pron] [pron] [vb mod] [be] [verb] | 16 |
|
| 3 | at [pron] [pron] [modal v] be [verb] | 16 |
|
