| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this [vb mod] to [be] | 38 |
|
| 2 | this [vb mod] to be | 38 |
|
| 3 | this [vb mod] to be | 38 |
|
| 4 | this used to [be] | 28 |
|
| 5 | this ought to [be] | 10 |
|
