| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] [verb] [prep] | 2721 |
|
| 2 | it [adv] [vb past] [prep] | 1014 |
|
| 3 | [pron] [adv] happened [prep] | 111 |
|
| 4 | it [adv] happen [prep] | 73 |
|
| 5 | [pers pn] [adv] happened [prep] | 46 |
|
| 6 | it [adv] happened [prep] | 18 |
|
