| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] at [art] | 2298 |
|
| 2 | [v-ing] at [art] door | 124 |
|
| 3 | be [v-ing] [art] door | 57 |
|
| 4 | be at [art] door | 39 |
|
