| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [adv] be [v-ing] | 618 |
|
| 2 | [vb base] be [v-ing] at | 165 |
|
| 3 | [adv] be [v-ing] at | 157 |
|
| 4 | [vb base] [adv] be at | 39 |
|
| 5 | [vb base] [adv] [v-ing] at | 24 |
|
