| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] could not have [be] [prep] | 8 |
|
| 2 | [pron] could not have [be] [prep] | 8 |
|
| 3 | could not have [be] [verb] [prep] | 91 |
|
| 4 | could not have [be] [vb pp] [prep] | 89 |
|
| 5 | could not have [be] [adj] [prep] | 21 |
|
| 6 | could not have [be] [adj] [prep] | 14 |
|
| 7 | could not have [be] achieved [prep] | 7 |
|
| 8 | could not have [be] achieve [prep] | 7 |
|
| 9 | could not have [be] [adj -er] [prep] | 5 |
|
