| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [adv] have | 153 |
|
| 2 | could not [adv] have | 88 |
|
| 3 | could not possibly have | 80 |
|
| 4 | could n't [adv] have | 65 |
|
| 5 | could not reasonably have | 14 |
|
| 6 | could not even have | 12 |
|
| 7 | could not really have | 11 |
|
| 8 | could not otherwise have | 5 |
|
