| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] could [adv] be [verb] [adj] | 9 |
|
| 2 | [conj] could [adv] [be] [vb pp] [adj] | 9 |
|
| 3 | [coord] could [adv] [be] [verb] [adj] | 5 |
|
