| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [verb] | 8047 |
|
| 2 | [vb past] [verb] at | 3848 |
|
| 3 | it [verb] at | 1102 |
|
| 4 | it [vb past] at | 429 |
|
