| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [vb pp] [prep] [noun] | 1127 |
|
| 2 | be [vb pp] [prep] that [noun] | 992 |
|
| 3 | must be [vb pp] [prep] that | 30 |
|
| 4 | must be [vb pp] that [noun] | 11 |
|
| 5 | must be [prep] that [noun] | 6 |
|
