| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it could [not/n't] have [verb] | 10 |
|
| 2 | [coord] it could [not/n't] have [verb] | 7 |
|
| 3 | it could [not/n't] have [been] [verb] | 15 |
|
| 4 | it could [not/n't] have be [verb] | 15 |
|
| 5 | it could [not/n't] have been [verb] | 15 |
|
| 6 | it could [not/n't] have [be] [verb] | 15 |
|
| 7 | it could [not/n't] have [verb] [prep] | 12 |
|
| 8 | it could [not/n't] have [verb] [prep] | 12 |
|
| 9 | it could [not/n't] have [verb] at | 8 |
|
| 10 | it could [not/n't] have [verb] at | 8 |
|
| 11 | it could [not/n't] have [verb] [adv] | 6 |
|
| 12 | it could [not/n't] have [verb] [art] | 5 |
|
| 13 | it could [not/n't] have [verb] [art] | 5 |
|
| 14 | it could [not/n't] have [verb] [adj] | 5 |
|
