| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [pron] could not have | 118 |
|
| 2 | [conj] we could not [vb infin] | 86 |
|
| 3 | [conj] we could not [verb] | 86 |
|
| 4 | [conj] we [modal v] not have | 53 |
|
| 5 | [conj] we could [adv] have | 40 |
|
| 6 | [conj] we could [not/n't] have | 22 |
|
| 7 | [conj] we could not have | 22 |
|
| 8 | [conj] we could not have | 10 |
|
