| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [prep] [adj] [noun] | 117 |
|
| 2 | must [be] [prep] [adj] [noun sg] | 104 |
|
| 3 | [vb mod] [be] [prep] [adj] quality | 20 |
|
| 4 | [modal v] [be] [prep] [adj] quality | 20 |
|
| 5 | must [be] [prep] [adj] quality | 7 |
|
| 6 | must [be] [prep] [adj] quality | 7 |
|
| 7 | must [be] [prep] [adj] quality | 7 |
|
| 8 | must [be] [prep] [adj] quality | 7 |
|
