| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] at the door | 43 |
|
| 2 | was [v-ing] at [art] door | 29 |
|
| 3 | be standing at [art] door | 16 |
|
| 4 | be knocking at [art] door | 7 |
|
| 5 | been [v-ing] at [art] door | 6 |
|
