| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [det] | 1394 |
|
| 2 | [vb past] at [det] | 1237 |
|
| 3 | it at [det] | 730 |
|
| 4 | it [vb past] at | 429 |
|
