| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [prep] [art] [adj] [noun sg] | 83 |
|
| 2 | [modal v] [be] [prep] [art] [det] [noun sg] | 70 |
|
| 3 | must [be] [prep] [art] [det] [noun sg] | 10 |
|
| 4 | must [be] [prep] [art] [det] [noun] | 10 |
|
