| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be at [noun prp] | 1421 |
|
| 2 | [to-vb] at [noun prp] | 890 |
|
| 3 | be [to-vb] [noun prp] | 873 |
|
| 4 | be [to-vb] at | 418 |
|
