| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [prep] us at | 13 |
|
| 2 | [vb base] to us at | 9 |
|
| 3 | [vb base] to us at | 9 |
|
| 4 | write [prep] us at | 7 |
|
