| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [noun] [noun] | 72 |
|
| 2 | [not/n't] be [noun] [noun] | 55 |
|
| 3 | could [not/n't] be [noun] | 50 |
|
| 4 | could [not/n't] [noun] [noun] | 5 |
|
