| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could [be] [conj] | 163 |
|
| 2 | it [modal v] [be] [coord] | 71 |
|
| 3 | [pron] could [be] [coord] | 22 |
|
| 4 | it could [be] [coord] | 12 |
|
