| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [verb] [prep] [adj] | 342 |
|
| 2 | not have [verb] [prep] [adj] | 224 |
|
| 3 | could not have [verb] [prep] | 182 |
|
| 4 | could have [verb] [prep] [adj] | 171 |
|
| 5 | could not have [verb] [adj] | 108 |
|
