| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [adv] | 27371 |
|
| 2 | [pron] [adv] happen | 954 |
|
| 3 | [pron] could happen | 170 |
|
| 4 | could [adv] happen | 78 |
|
