| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [be] | 4063 |
|
| 2 | [adv] [be] [noun] | 1172 |
|
| 3 | could [be] [noun] | 542 |
|
| 4 | could [adv] [noun] | 49 |
|
