| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [noun pl] [prep] that [noun] | 56 |
|
| 2 | must be [noun pl] [prep] [noun] | 18 |
|
| 3 | must be [noun pl] [prep] that | 9 |
|
| 4 | must be [prep] that [noun] | 6 |
|
