| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [noun] [prep] [det] [noun] | 19 |
|
| 2 | must [be] national [prep] [det] [noun] | 7 |
|
| 3 | must [be] national [prep] [det] [noun] | 7 |
|
| 4 | must be national [prep] [det] [noun] | 7 |
|
| 5 | must be national [prep] [adj] [noun] | 7 |
|
| 6 | must be national [prep] [det] [noun] | 7 |
|
| 7 | [modal v] be national [prep] [det] [noun] | 7 |
|
