| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [adv] [be] [prep] [noun] | 495 |
|
| 2 | could [adv] [be] [prep] [noun] | 59 |
|
| 3 | could [adv] [be] [prep] [noun] | 49 |
|
| 4 | could [adv] [be] [prep] [noun] | 49 |
|
