| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at a [noun] | 4020 |
|
| 2 | [verb] [v-ing] a [noun] | 1777 |
|
| 3 | [v-ing] at a [noun] | 888 |
|
| 4 | [verb] [v-ing] at [noun] | 267 |
|
| 5 | [verb] [v-ing] at a | 58 |
|
