| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [verb] | 8047 |
|
| 2 | [vb past] [verb] an | 2881 |
|
| 3 | it [verb] an | 1600 |
|
| 4 | it [vb past] an | 569 |
|
