| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] have [vb pp] | 1018 |
|
| 2 | could [not/n't] have [verb] | 1018 |
|
| 3 | could not have [verb] | 548 |
|
| 4 | could n't have [verb] | 469 |
|
| 5 | could [not/n't] have done | 90 |
|
| 6 | could [not/n't] have do | 90 |
|
| 7 | could [not/n't] have said | 41 |
|
| 8 | could [not/n't] have known | 41 |
|
| 9 | could [not/n't] have come | 41 |
|
| 10 | could [not/n't] have say | 41 |
|
| 11 | could [not/n't] have know | 41 |
|
| 12 | could [not/n't] have come | 41 |
|
| 13 | could [not/n't] have had | 36 |
|
| 14 | could [not/n't] have have | 36 |
|
| 15 | could [not/n't] have got | 28 |
|
| 16 | could [not/n't] have get | 28 |
|
| 17 | could [not/n't] have gone | 25 |
|
| 18 | could [not/n't] have go | 25 |
|
| 19 | could [not/n't] have made | 22 |
|
| 20 | could [not/n't] have make | 22 |
|
| 21 | could [not/n't] have chosen | 19 |
|
| 22 | could [not/n't] have choose | 19 |
|
| 23 | could [not/n't] have foreseen | 15 |
|
| 24 | could [not/n't] have foresee | 15 |
|
| 25 | could [not/n't] have managed | 14 |
|
| 26 | could [not/n't] have cared | 14 |
|
| 27 | could [not/n't] have care | 14 |
|
| 28 | could [not/n't] have manage | 14 |
|
| 29 | could [not/n't] have found | 13 |
|
| 30 | could [not/n't] have coped | 13 |
|
