| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] at [art] | 8757 |
|
| 2 | be [v-ing] [art] | 3777 |
|
| 3 | be at [art] | 926 |
|
| 4 | be [v-ing] at | 857 |
|
