| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this [be] have [been] | 8 |
|
| 2 | this [be] to have [been] | 8 |
|
| 3 | this [be] [verb] [been] | 8 |
|
| 4 | this [be] [to-vb] [been] | 8 |
|
