| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] [prep] that [noun] | 18 |
|
| 2 | must be [vb pp] [prep] that [noun] | 17 |
|
| 3 | must be [noun pl] [prep] that [noun] | 8 |
|
| 4 | must be [noun] [prep] that [noun] | 8 |
|
| 5 | must be national [prep] that [noun] | 7 |
|
| 6 | must be nationals [prep] that [noun] | 7 |
|
| 7 | must be [adj] [prep] that [noun] | 5 |
|
