| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [conj] [pron] could have | 210 |
|
| 2 | not [verb] [conj] [pron] could | 149 |
|
| 3 | not [verb] [pron] could have | 51 |
|
| 4 | not [conj] [pron] could have | 5 |
|
