| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb past] at a [adj] [noun sg] | 6 |
|
| 2 | which [vb past] at an [adj] [noun sg] | 6 |
|
| 3 | which [vb past] at the [adj] [noun sg] | 5 |
|
