| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [adv] be [v-ing] | 311 |
|
| 2 | [adv] be [v-ing] at | 157 |
|
| 3 | [vb -s] be [v-ing] at | 89 |
|
| 4 | [vb -s] [adv] be at | 37 |
|
| 5 | [vb -s] [adv] [v-ing] at | 13 |
|
