| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [pron] have [verb] | 55 |
|
| 2 | could not [pron] have [vb pp] | 55 |
|
| 3 | [vb mod] not [pron] have done | 12 |
|
| 4 | [modal v] not [pron] have done | 12 |
|
| 5 | could not [pron] [verb] done | 8 |
|
| 6 | could not [pron] [vb infin] done | 8 |
|
| 7 | could [adv] [pron] have done | 8 |
|
| 8 | could not [pron] have done | 8 |
|
| 9 | could not [pron] have done | 8 |
|
| 10 | could not [pron] have do | 8 |
|
