| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] seen to [be] [adj] | 44 |
|
| 2 | [vb mod] [be] seen to [be] [adj] | 44 |
|
| 3 | must [be] [vb pp] to [be] [adj] | 27 |
|
| 4 | must [be] [verb] to [be] [adj] | 27 |
|
| 5 | must [be] seen to [be] [adj] | 13 |
|
| 6 | must [be] see to [be] [adj] | 13 |
|
| 7 | must [be] seen [prep] [be] [adj] | 13 |
|
| 8 | must [be] seen to [be] [adj] | 13 |
|
| 9 | must [be] seen [prep] [be] [adj] | 13 |
|
| 10 | must [be] seen to [be] [adj] | 13 |
|
| 11 | must [be] seen to [be] [adj] | 13 |
|
