| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [v-ing] at | 2095 |
|
| 2 | [adv] [v-ing] an | 851 |
|
| 3 | [adv] at an | 307 |
|
| 4 | [v-ing] at an | 205 |
|
