| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it could [verb] | 807 |
|
| 2 | [conj] it could [vb infin] | 804 |
|
| 3 | [conj] it [modal v] happen | 102 |
|
| 4 | [conj] it [vb mod] happen | 102 |
|
| 5 | [conj] [pron] could happen | 34 |
|
| 6 | [conj] it could happen | 29 |
|
| 7 | [conj] it could happen | 29 |
|
