| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [be] [verb] | 2289 |
|
| 2 | could not [conj] [verb] | 34 |
|
| 3 | not [conj] [be] [verb] | 19 |
|
| 4 | could not [conj] [be] | 13 |
|
