| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] happen be | 64 |
|
| 2 | [vb mod] happen [be] | 62 |
|
| 3 | [vb mod] happen is | 53 |
|
| 4 | [vb mod] happen [is] | 53 |
|
| 5 | will happen [be] | 23 |
|
| 6 | can happen [be] | 11 |
|
| 7 | would happen [be] | 10 |
|
| 8 | [vb mod] happen [was/were] | 8 |
|
| 9 | [vb mod] happen was | 7 |
|
| 10 | could happen [be] | 6 |
|
