| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | knocked [prep] the door | 128 |
|
| 2 | knocked on the door | 92 |
|
| 3 | knocked on the door | 92 |
|
| 4 | knocked at the door | 36 |
|
| 5 | knocked at the door | 36 |
|
