| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb -s] [adv] [vb pp] | 1770 |
|
| 2 | it [vb -s] [adv] [vb pp] | 1281 |
|
| 3 | [pron] [vb -s] often [vb pp] | 46 |
|
| 4 | it [verb] often [vb pp] | 21 |
|
| 5 | it [vb -s] often [verb] | 19 |
|
| 6 | it [vb -s] often [vb pp] | 18 |
|
