| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [be] [vb pp] [adv] to [be] | 6 |
|
| 2 | should be [vb pp] [adv] to [be] | 6 |
|
| 3 | should [be] [vb pp] [adv] to be | 6 |
|
| 4 | should be [vb pp] [adv] to [be] | 6 |
|
