| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] be [verb] at | 576 |
|
| 2 | [vb -s] [be] [verb] at | 576 |
|
| 3 | [vb -s] is [verb] [prep] | 134 |
|
| 4 | [verb] is [verb] at | 83 |
|
| 5 | [vb -s] [is] [verb] at | 5 |
|
