| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] be [verb] [prep] | 894 |
|
| 2 | could be [verb] [prep] [be] | 152 |
|
| 3 | [not/n't] be [verb] [prep] [be] | 145 |
|
| 4 | could [not/n't] [verb] [prep] [be] | 80 |
|
