| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [vb past] [noun sg] | 2137 |
|
| 2 | [vb past] at [noun sg] | 1230 |
|
| 3 | who [vb past] at | 602 |
|
| 4 | who at [noun sg] | 15 |
|
