| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [prep] be | 4615 |
|
| 2 | [vb mod] to [be] | 4612 |
|
| 3 | used [prep] [be] | 2738 |
|
| 4 | ought [prep] [be] | 1859 |
|
| 5 | should [prep] [be] | 5 |
|
