| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] [vb past] | 5942 |
|
| 2 | it [adv] [vb past] | 5895 |
|
| 3 | [pron] often [vb past] | 815 |
|
| 4 | it often [verb] | 280 |
|
| 5 | it often [vb past] | 47 |
|
