| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [be] shown [prep] | 355 |
|
| 2 | have previously [be] shown | 17 |
|
| 3 | have previously [be] [prep] | 17 |
|
| 4 | previously [be] shown [prep] | 9 |
|
