| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be of [adj] [noun] | 450 |
|
| 2 | [vb mod] be of [adj] [noun] | 450 |
|
| 3 | must be [prep] [adj] [noun] | 80 |
|
| 4 | must be [prep] [adj] [noun] | 80 |
|
| 5 | must be of [adj] [noun] | 32 |
|
| 6 | must [be] of [adj] [noun] | 29 |
|
| 7 | must be of [adj] [noun] | 29 |
|
| 8 | must [be] of [adj] [noun] | 29 |
|
| 9 | must be of [adj] [noun] | 29 |
|
| 10 | must be of [adj] [noun] | 29 |
|
