| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [vb mod] [be] seen to [be] | 18 |
|
| 2 | [noun pl] [vb mod] [be] seen to be | 18 |
|
| 3 | [noun pl] [vb mod] be seen to [be] | 18 |
|
| 4 | [noun pl] must [be] seen to [be] | 6 |
|
