| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be seen [prep] be [adj] | 44 |
|
| 2 | [vb mod] be seen [prep] be [adj] | 44 |
|
| 3 | must be [vb pp] [prep] be [adj] | 28 |
|
| 4 | must be [verb] [prep] be [adj] | 28 |
|
| 5 | must be see [prep] be [adj] | 13 |
|
| 6 | must be seen [prep] be [adj] | 13 |
|
| 7 | must be seen [prep] be [adj] | 13 |
|
| 8 | must [be] seen [prep] be [adj] | 13 |
|
| 9 | must [be] seen [prep] be [adj] | 13 |
|
| 10 | must be seen [prep] [be] [adj] | 13 |
|
| 11 | must be seen [prep] be [adj] | 13 |
|
| 12 | must be seen [prep] be [adj] | 13 |
|
