| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [adv] at a [noun sg] | 91 |
|
| 2 | [adv] at a [noun sg] [Wh adv] | 82 |
|
| 3 | [v-ing] at a [noun sg] [Wh adv] | 34 |
|
| 4 | [v-ing] [adv] a [noun sg] [Wh adv] | 6 |
|
