| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we [vb mod] to be | 176 |
|
| 2 | we [vb mod] [prep] be | 176 |
|
| 3 | we ought [prep] be | 131 |
|
| 4 | we used [prep] be | 44 |
|
