| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] be [noun] | 155 |
|
| 2 | [modal v] only be [noun] | 91 |
|
| 3 | could only [be] [noun] | 26 |
|
| 4 | could only be [noun] | 26 |
|
| 5 | could only [be] [noun] | 26 |
|
