| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] could [adv] have | 612 |
|
| 2 | [pers pn] [adv] have [noun pl] | 390 |
|
| 3 | [pers pn] could have [noun pl] | 27 |
|
| 4 | could [adv] have [noun pl] | 8 |
|
