| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] [adv] [be] [verb] | 3239 |
|
| 2 | it [modal v] [adv] [be] [verb] | 3239 |
|
| 3 | [pron] should [adv] [be] [verb] | 1169 |
|
| 4 | it should [adv] [be] [verb] | 521 |
|
| 5 | it should [adv] [be] [verb] | 521 |
|
