| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] to be seen to | 11 |
|
| 2 | [vb base] to be seen to | 11 |
|
| 3 | [vb base] to [be] seen to | 11 |
|
| 4 | have to [be] seen to | 7 |
|
