| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must [prep] [be] a | 13 |
|
| 2 | [pers pn] must [prep] [be] a | 11 |
|
| 3 | it must [prep] [be] a | 8 |
|
| 4 | it must [prep] [be] a | 8 |
|
| 5 | must [vb infin] [prep] [be] a | 18 |
|
| 6 | must [verb] [prep] [be] a | 18 |
|
| 7 | must [prep] [be] a [noun sg] | 9 |
|
| 8 | must [prep] [be] a [noun] | 9 |
|
| 9 | must [prep] [be] a [adj] | 8 |
|
| 10 | must [prep] [be] a [adj] | 6 |
|
