| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] [verb] [conj] | 1529 |
|
| 2 | could [be] [vb pp] [conj] | 1515 |
|
| 3 | [modal v] [be] assumed [conj] | 91 |
|
| 4 | could [be] assume [conj] | 5 |
|
| 5 | could [be] assumed [conj] | 5 |
|
