| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [vb pp] [prep] [noun pl] | 3852 |
|
| 2 | [vb mod] be [vb pp] [prep] [noun pl] | 3852 |
|
| 3 | must be [vb pp] [prep] [noun] | 1127 |
|
| 4 | must be [verb] [prep] [noun pl] | 226 |
|
| 5 | must be [vb pp] [prep] [noun pl] | 220 |
|
| 6 | must [be] [vb pp] [prep] [noun pl] | 220 |
|
| 7 | must be [vb pp] [prep] [noun pl] | 220 |
|
| 8 | must be [vb pp] [prep] [noun pl] | 220 |
|
| 9 | must [be] [vb pp] [prep] [noun pl] | 220 |
|
