| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [be] [noun] [noun] | 27 |
|
| 2 | could [adv] [be] [noun] [noun] | 20 |
|
| 3 | [modal v] well [be] [noun] [noun] | 15 |
|
| 4 | could well [be] [noun] [noun] | 6 |
|
