| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [pron] [adv] | 3409 |
|
| 2 | which [pron] [adv] | 2122 |
|
| 3 | at which [pron] | 801 |
|
| 4 | at which [adv] | 25 |
|
