| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] it [adv] [verb] | 276 |
|
| 2 | [verb] it [adv] happen | 36 |
|
| 3 | [vb past] [pron] [adv] happen | 17 |
|
| 4 | [vb past] [pers pn] [adv] happen | 10 |
|
| 5 | [vb past] it [adv] happen | 8 |
|
| 6 | [vb past] it [adv] happen | 7 |
|
