| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be in [prep] [noun prp] [adj] | 6 |
|
| 2 | [modal v] be in [prep] [noun prp] [adj] | 6 |
|
| 3 | must be in [prep] [noun prp] [adj] | 6 |
|
| 4 | [vb mod] be in [prep] [noun prp] [adj] | 6 |
|
| 5 | be [vb pp] in [prep] [noun prp] [adj] | 5 |
|
| 6 | be [verb] in [prep] [noun prp] [adj] | 5 |
|
