| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [verb] at | 3848 |
|
| 2 | [vb past] [verb] us | 666 |
|
| 3 | [verb] us at | 284 |
|
| 4 | [vb past] us at | 56 |
|
