| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] [verb] | 17250 |
|
| 2 | it [adv] [vb -s] | 9815 |
|
| 3 | it [adv] happen | 403 |
|
| 4 | [pron] [adv] happens | 387 |
|
| 5 | [pers pn] [adv] happens | 200 |
|
| 6 | it [adv] happens | 195 |
|
| 7 | it [adv] happens | 195 |
|
