| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should have [vb pp] it be | 18 |
|
| 2 | should [vb infin] [vb pp] it be | 18 |
|
| 3 | should have [vb pp] it be | 18 |
|
| 4 | should [verb] [vb pp] it was | 15 |
|
| 5 | should [verb] thought it be | 6 |
|
| 6 | should [verb] known it be | 5 |
|
