| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have be | 21175 |
|
| 2 | should [verb] be | 2039 |
|
| 3 | should [vb infin] be | 2037 |
|
| 4 | should have be | 1890 |
|
| 5 | should have [be] | 1857 |
|
