| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could not be | 711 |
|
| 2 | [pron] could be [noun] | 308 |
|
| 3 | could not be [noun] | 18 |
|
| 4 | [pron] could not [noun] | 12 |
|
