| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb past] be [verb] [prep] | 622 |
|
| 2 | [pron] [vb past] be [verb] at | 300 |
|
| 3 | they [verb] be [verb] at | 49 |
|
| 4 | they [vb past] [be] [verb] at | 28 |
|
