| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [be] [verb] | 1911 |
|
| 2 | but could not [verb] | 167 |
|
| 3 | but could [be] [verb] | 41 |
|
| 4 | but could not [be] | 16 |
|
| 5 | but not [be] [verb] | 7 |
|
