| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could be [verb] | 1295 |
|
| 2 | it could be [vb pp] | 1259 |
|
| 3 | it [modal v] be done | 337 |
|
| 4 | [pron] could be done | 150 |
|
| 5 | it could be do | 57 |
|
| 6 | it could [be] done | 51 |
|
| 7 | it could [be] done | 51 |
|
| 8 | it could be done | 51 |
|
