| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [adv] happen | 40 |
|
| 2 | [pron] could [adv] happen | 40 |
|
| 3 | [pers pn] could [adv] happen | 35 |
|
| 4 | it could [adv] happen | 35 |
|
| 5 | it could [adv] happen | 35 |
|
| 6 | [pron] could not happen | 21 |
|
| 7 | [pron] could [not/n't] happen | 21 |
|
| 8 | [pron] could [adv] happen | 19 |
|
| 9 | [pron] could n't happen | 16 |
|
| 10 | [pron] could never happen | 6 |
|
| 11 | [pron] could never happen | 6 |
|
| 12 | [pron] could possibly happen | 5 |
|
| 13 | [pron] could possibly happen | 5 |
|
| 14 | [pron] could not happen | 5 |
|
