| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could [be] [vb pp] | 1259 |
|
| 2 | could [be] [vb pp] [adj] | 239 |
|
| 3 | it could [be] [adj] | 213 |
|
| 4 | it [be] [vb pp] [adj] | 13 |
|
