| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [adv] [be] [adj] [prep] [noun] | 418 |
|
| 2 | could [adv] [be] [adj] [prep] [noun] | 28 |
|
| 3 | could [adv] [be] [adj] [prep] [noun] | 21 |
|
| 4 | could [adv] [be] [adj] [prep] [noun] | 17 |
|
