| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [verb] [noun sg] | 19259 |
|
| 2 | could have [verb] | 5379 |
|
| 3 | could [verb] [noun sg] | 2313 |
|
| 4 | could have [noun sg] | 92 |
|
