| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [adv] [be] | 9388 |
|
| 2 | it [vb mod] [adv] [be] | 9388 |
|
| 3 | [pron] could [adv] [be] | 2675 |
|
| 4 | it could [adv] [be] | 882 |
|
| 5 | it could [adv] [be] | 882 |
|
