| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [vb pp] be | 71 |
|
| 2 | could be [vb pp] [was/were] | 58 |
|
| 3 | could be [vb pp] was | 45 |
|
| 4 | could be [vb pp] were | 13 |
|
| 5 | could be [vb pp] is | 12 |
|
| 6 | could be [vb pp] [is] | 12 |
|
| 7 | could be done [be] | 6 |
|
| 8 | could be made [be] | 6 |
|
| 9 | could be achieved [be] | 5 |
|
