| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [verb] it [prep] | 1568 |
|
| 2 | [verb] at it [prep] | 405 |
|
| 3 | [vb past] at it [prep] | 103 |
|
| 4 | [vb past] [verb] at it | 68 |
|
| 5 | [vb past] [verb] at [prep] | 21 |
|
