| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [be] [verb] | 4880 |
|
| 2 | could [adv] [be] [vb pp] | 4744 |
|
| 3 | [modal v] [adv] [be] assumed | 143 |
|
| 4 | [vb mod] [adv] [be] assumed | 143 |
|
| 5 | could [adv] [be] assumed | 9 |
|
| 6 | could [adv] [be] assume | 9 |
|
