| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [pron] could | 9887 |
|
| 2 | [pron] could have | 5696 |
|
| 3 | [noun] could have | 2787 |
|
| 4 | [noun] [pron] have | 11 |
|
