| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] be [vb pp] | 11463 |
|
| 2 | [pron] could be [vb pp] | 3610 |
|
| 3 | it could be [verb] | 1295 |
|
| 4 | it could be [vb pp] | 1259 |
|
| 5 | it could [be] [vb pp] | 1259 |
|
| 6 | it could [be] [vb pp] | 1259 |
|
