| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it should [be] [vb pp] [conj] | 885 |
|
| 2 | should [adv] [be] [vb pp] [conj] | 612 |
|
| 3 | it should [adv] [be] [vb pp] | 514 |
|
| 4 | it [adv] [be] [vb pp] [conj] | 26 |
|
