| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it can [adv] [verb] | 1100 |
|
| 2 | it can [adv] [vb infin] | 1093 |
|
| 3 | it [modal v] [adv] happen | 294 |
|
| 4 | it [vb mod] [adv] happen | 294 |
|
| 5 | it can [adv] happen | 32 |
|
| 6 | [pron] can [adv] happen | 31 |
|
| 7 | it can [adv] happen | 27 |
|
