| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could not have | 435 |
|
| 2 | one could not [verb] | 76 |
|
| 3 | one [modal v] not have | 33 |
|
| 4 | one could [adv] have | 22 |
|
| 5 | one could [not/n't] have | 8 |
|
| 6 | one could not have | 8 |
|
| 7 | one could not have | 6 |
|
| 8 | [indef pn] could not have | 6 |
|
